PATENTS RELATED TO LEVELS

Dr. Demchick has handled client patent matters related to levels.

Dr. Demchick is a scientist with a quarter of a century of research experience in academic, industrial and governmental settings.

If you are considering patent protection for an invention, Dr. Demchick will be glad to discuss the matter with you. There is no charge for an initial discussion.

The following sampling is to give you some sense of the types of levels related inventions which have received United States patent protection. The patent list is not exhaustive and is certainly not a substitute for a proper patent search . It should be noted that only U.S. Patents are included.

It should be noted that spelling, form and typographical errors in the original patents are preserved here.

Omnidirectional torpedo level having magnetic mounts and adjustable protractor (United States Patent 7,152,335)

Method of using a level (United States Patent 7,150,106)

Level and protractor (United States Patent 7,137,209)

Spirit level (United States Patent 7,117,608)

Overmolded vial for use with a level (United States Patent 7,086,167)

Vial illumination feature for a tool such as a level (United States Patent 7,024,781)

Combination level and squaring tool (United States Patent 6,996,911)

Level (United States Patent 6,988,320)

Multi-axis installable and adjustable level (United States Patent 6,981,330)

Horizontal plane viewable precision bubble level (United States Patent 6,968,626)

Dark-banded vial for use with level (United States Patent 6,957,494)

Multi plane plumb level (United States Patent 6,918,187)

Versa level (United States Patent 6,836,973)

Differential pressure level control (United States Patent 6,826,956)

Square level (United States Patent 6,807,743)

Bubble level meter and related method (United States Patent 6,799,457)

Level having rotatable vial support device (United States Patent 6,782,628)

Spirit level (United States Patent 6,748,666)

Illuminated spirit level (United States Patent 6,748,665)

Electronic spirit level for measurement of inclination-execution of electric resistors and conductors (United States Patent 6,725,554)

Bubble level (United States Patent 6,681,494)

Combined chalk line and articulated level device (United States Patent 6,678,961)

Surface object locator with level indicator and scribe tip (United States Patent 6,674,276)

Shoe with level and method for determining grade (United States Patent 6,665,962)

Extensible carpenter's level (United States Patent 6,658,752)

Height measuring level pen/pencil (United States Patent 6,599,045)

Laser level with protective housing (United States Patent 6,577,388)

Adjustable spirit level for tile and cabinet installation (United States Patent 6,550,152)

Spirit level for tile and cabinet installation (United States Patent 6,481,111)

Angle spirit level device (United States Patent 6,477,781)

Spirit level (United States Patent 6,449,859)

Spirit level (United States Patent 6,430,827)

Spirit level with hand grips (United States Patent 6,418,634)

Water level (United States Patent 6,381,859)

Extensible carpenter's level (United States Patent 6,279,240)

Spirit level with multiple bubble vials (United States Patent 6,209,211)

Wall hanging level (United States Patent 6,205,669)

Level (United States Patent 6,098,298)

Tape blade level (United States Patent 6,094,833)

Telescoping level apparatus and method (United States Patent 6,047,478)

Post, pipe, and sign level (United States Patent 6,029,359)

Pocket level with optional magnet (United States Patent 6,026,581)

Receptacle level (United States Patent 6,003,234)

Installation and method for determining the level and density of a liquid in a tank, using a single immersed bubble probe (United States Patent 5,953,954)

Liquid level monitor (United States Patent 5,901,603)

Level line and limb line combination (United States Patent 5,864,956)

Level clamp (United States Patent 5,819,425)

Level clamp (United States Patent 5,799,404)

Level measurement method using measurements of water column pressure therefor (United States Patent 5,791,187)

Hand-held laser level grade checking device (United States Patent 5,784,792)

Level accessory for golf putters (United States Patent 5,755,623)

Spirit level vial construction (United States Patent 5,749,152)

Level indicating device for a vehicle headlamp (United States Patent 5,697,161)

Liquid level vial and method for making the vial (United States Patent 5,651,186)

Laser level, accessories and method of use (United States Patent 5,604,987)

Level clamp (United States Patent 5,581,900)

Level marker (United States Patent 5,522,146)

Combination level (United States Patent 5,487,222)

Level indicating device for a vehicle headlamp (United States Patent 5,467,255)

Sight rod level (United States Patent 5,459,934)

Combination interlocking segmented level (United States Patent 5,433,011)

Adjustable level (United States Patent 5,421,094)

Headlamp indicating device with highlighted level bubble (United States Patent 5,414,937)

Level indicating device for a vehicle headlamp (United States Patent 5,408,391)

Sensor for measuring acceleration and tilt with a bubble level (United States Patent 5,351,539)

Aiming level device for motor vehicle headlamp (United States Patent 5,337,222)

Combination plumb or level and height setting instruments (United States Patent 5,309,645)

Liquid level sensing method and apparatus (United States Patent 5,207,251)

Post level (United States Patent 5,207,004)

Pocket sized telescoping level apparatus (United States Patent 5,155,917)

Low power tiltmeter electronics with compensation for bubble level fluid temperature (United States Patent 5,146,688)

Multi-function spirit-level (United States Patent 5,127,167)

Remote, pneumatic, continuous sensor of the liquid level in a vacuum tank (United States Patent 5,090,242)

Illuminated spirit level (United States Patent 5,075,978)

Protractor bubble level (United States Patent 5,063,679)

Level for use in bending conduit (United States Patent 5,058,407)

Illuminated level (United States Patent 5,020,232)

Level vial with extender pitch range (United States Patent 5,003,699)

Spirit level (United States Patent 5,001,838)

Green inclination level for golfers (United States Patent 4,984,791)

Plumber's level (United States Patent 4,947,556)

Method for electromagnetic ultrasonic conversion for monitoring the fill level and bubble formation in enclosures containing liquid (United States Patent 4,934,191)

Golf club including sight level indicator (United States Patent 4,927,151)

Cross vial liquid bubble illuminated level (United States Patent 4,912,854)

Level attachment (United States Patent 4,910,876)

Air-bubble level for portable tools (United States Patent 4,908,949)

Comb with built-in level adjustable to a plurality of orientations (United States Patent 4,905,717)

Fluid level sensing method and apparatus (United States Patent 4,881,487)

Combination range pole and bubble-level therefor (United States Patent 4,879,816)

Level with illuminated bubble vials (United States Patent 4,876,798)

Extension level (United States Patent 4,862,595)

Bubble level (United States Patent 4,860,459)

Spirit level (United States Patent 4,843,724)

Level device for a chainsaw (United States Patent 4,794,701)

Level with electronic signals (United States Patent 4,720,920)

Liquid level measuring apparatus and method (United States Patent 4,665,746)

Hand drill level (United States Patent 4,656,749)

Polyfunctional spirit-level (United States Patent 4,653,193)

Method of determining the minimum level of gas enrichment for a miscible flood (United States Patent 4,621,522)

Omnidirectional torpedo level having magnetic mounts and adjustable protractor (United States Patent 7,152,335)

Method of using a level (United States Patent 7,150,106)

Level and protractor (United States Patent 7,137,209)

Spirit level (United States Patent 7,117,608)

Overmolded vial for use with a level (United States Patent 7,086,167)

Vial illumination feature for a tool such as a level (United States Patent 7,024,781)

Combination level and squaring tool (United States Patent 6,996,911)

Level (United States Patent 6,988,320)

Multi-axis installable and adjustable level (United States Patent 6,981,330)

Horizontal plane viewable precision bubble level (United States Patent 6,968,626)

Dark-banded vial for use with level (United States Patent 6,957,494)

Multi plane plumb level (United States Patent 6,918,187)

Versa level (United States Patent 6,836,973)

Differential pressure level control (United States Patent 6,826,956)

Square level (United States Patent 6,807,743)

Bubble level meter and related method (United States Patent 6,799,457)

Level having rotatable vial support device (United States Patent 6,782,628)

Spirit level (United States Patent 6,748,666)

Illuminated spirit level (United States Patent 6,748,665)

Electronic spirit level for measurement of inclination-execution of electric resistors and conductors (United States Patent 6,725,554)

Bubble level (United States Patent 6,681,494)

Combined chalk line and articulated level device (United States Patent 6,678,961)

Surface object locator with level indicator and scribe tip (United States Patent 6,674,276)

Shoe with level and method for determining grade (United States Patent 6,665,962)

Extensible carpenter's level (United States Patent 6,658,752)

Height measuring level pen/pencil (United States Patent 6,599,045)

Laser level with protective housing (United States Patent 6,577,388)

Adjustable spirit level for tile and cabinet installation (United States Patent 6,550,152)

Spirit level for tile and cabinet installation (United States Patent 6,481,111)

Angle spirit level device (United States Patent 6,477,781)

Spirit level (United States Patent 6,449,859)

Spirit level (United States Patent 6,430,827)

Spirit level with hand grips (United States Patent 6,418,634)

Water level (United States Patent 6,381,859)

Extensible carpenter's level (United States Patent 6,279,240)

Spirit level with multiple bubble vials (United States Patent 6,209,211)

Wall hanging level (United States Patent 6,205,669)

Level (United States Patent 6,098,298)

Tape blade level (United States Patent 6,094,833)

Telescoping level apparatus and method (United States Patent 6,047,478)

Post, pipe, and sign level (United States Patent 6,029,359)

Pocket level with optional magnet (United States Patent 6,026,581)

Receptacle level (United States Patent 6,003,234)

Installation and method for determining the level and density of a liquid in a tank, using a single immersed bubble probe (United States Patent 5,953,954)

Liquid level monitor (United States Patent 5,901,603)

Level line and limb line combination (United States Patent 5,864,956)

Level clamp (United States Patent 5,819,425)

Level clamp (United States Patent 5,799,404)

Level measurement method using measurements of water column pressure therefor (United States Patent 5,791,187)

Hand-held laser level grade checking device (United States Patent 5,784,792)

Level accessory for golf putters (United States Patent 5,755,623)

Spirit level vial construction (United States Patent 5,749,152)

Level indicating device for a vehicle headlamp (United States Patent 5,697,161)

Liquid level vial and method for making the vial (United States Patent 5,651,186)

Laser level, accessories and method of use (United States Patent 5,604,987)

Level clamp (United States Patent 5,581,900)

Level marker (United States Patent 5,522,146)

Combination level (United States Patent 5,487,222)

Level indicating device for a vehicle headlamp (United States Patent 5,467,255)

Sight rod level (United States Patent 5,459,934)

Combination interlocking segmented level (United States Patent 5,433,011)

Adjustable level (United States Patent 5,421,094)

Headlamp indicating device with highlighted level bubble (United States Patent 5,414,937)

Level indicating device for a vehicle headlamp (United States Patent 5,408,391)

Sensor for measuring acceleration and tilt with a bubble level (United States Patent 5,351,539)

Aiming level device for motor vehicle headlamp (United States Patent 5,337,222)

Combination plumb or level and height setting instruments (United States Patent 5,309,645)

Liquid level sensing method and apparatus (United States Patent 5,207,251)

Post level (United States Patent 5,207,004)

Pocket sized telescoping level apparatus (United States Patent 5,155,917)

Low power tiltmeter electronics with compensation for bubble level fluid temperature (United States Patent 5,146,688)

Multi-function spirit-level (United States Patent 5,127,167)

Remote, pneumatic, continuous sensor of the liquid level in a vacuum tank (United States Patent 5,090,242)

Illuminated spirit level (United States Patent 5,075,978)

Protractor bubble level (United States Patent 5,063,679)

Level for use in bending conduit (United States Patent 5,058,407)

Illuminated level (United States Patent 5,020,232)

Level vial with extender pitch range (United States Patent 5,003,699)

Spirit level (United States Patent 5,001,838)

Green inclination level for golfers (United States Patent 4,984,791)

Plumber's level (United States Patent 4,947,556)

Method for electromagnetic ultrasonic conversion for monitoring the fill level and bubble formation in enclosures containing liquid (United States Patent 4,934,191)

Golf club including sight level indicator (United States Patent 4,927,151)

Cross vial liquid bubble illuminated level (United States Patent 4,912,854)

Level attachment (United States Patent 4,910,876)

Air-bubble level for portable tools (United States Patent 4,908,949)

Comb with built-in level adjustable to a plurality of orientations (United States Patent 4,905,717)

Fluid level sensing method and apparatus (United States Patent 4,881,487)

Combination range pole and bubble-level therefor (United States Patent 4,879,816)

Level with illuminated bubble vials (United States Patent 4,876,798)

Extension level (United States Patent 4,862,595)

Bubble level (United States Patent 4,860,459)

Spirit level (United States Patent 4,843,724)

Level device for a chainsaw (United States Patent 4,794,701)

Level with electronic signals (United States Patent 4,720,920)

Liquid level measuring apparatus and method (United States Patent 4,665,746)

Hand drill level (United States Patent 4,656,749)

Polyfunctional spirit-level (United States Patent 4,653,193)

Method of determining the minimum level of gas enrichment for a miscible flood (United States Patent 4,621,522)

Omnidirectional torpedo level having magnetic mounts and adjustable protractor (United States Patent 7,152,335)

Method of using a level (United States Patent 7,150,106)

Although his recognition as a registered patent agent permits him to represent others in all patent matters before the United States Patent and Trademark Office, Dr. Demchick limits his practice to patent matters involving inventions for which he is confident that his expertise will allow him to serve his client well. He will gladly discuss whether he is comfortable handling cases involving inventions in a particular field. He will err on the side of declining cases if he has uncertainty about his ability to do what is needed in the case. Dr. Demchick does not represent clients in court. However, he refers clients to a patent attorney who does represent others in court, if it appears likely that patent related representation in court is appropriate. Dr. Demchick prepares and files non-provisional (regular) patent applications and provisional patent applications. He prepares and files utility patent applications and design patent applications. He prepares and files U.S. patent applications and international patent applications under the Patent Cooperation Treaty (PCT). He prepares and files applications to enter the U.S. National Phase for inventions for which international patent applications (PCT) were already filed. One of the matters he discusses with each client or potential client is which type of application(s) best meets that client's needs. He usually does a patent search (patentability search) as part of the preparation of a patent application. He discusses the value of patent searching with each inventor before agreeing to prepare a patent application for that inventor.