Gerald J. Hannappel

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Phoenix, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
All terrain conversion system for three-wheeled vehicles
- Patent number 4,687,447
- Issue date Aug 18, 1987
- Gerald J. Hannappel
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Convertible load carrying apparatus for all terrain vehicles
- Patent number 4,648,617
- Issue date Mar 10, 1987
- Gerald J. Hannappel
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
All terrain vehicle conversion system
- Patent number 4,522,420
- Issue date Jun 11, 1985
- Gerald J. Hannappel
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS