George R. Heffner

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La Verne, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for assembling wall modules from a pair of stretched shee...
- Patent number 4,257,150
- Issue date Mar 24, 1981
- Grumman Flexible Corporation
- George R. Heffner
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Bus suspension mating fixture assembly
- Patent number 4,257,158
- Issue date Mar 24, 1981
- Grumman Flexible Corporation
- Max Casutt
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Apparatus for holding hollow wall panels while they are filled with...
- Patent number 4,231,556
- Issue date Nov 4, 1980
- Grumman Flexible Corporation
- George R. Heffner
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL