John H. Hessler

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Sunnyvale, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Electronic control system for stair climbing vehicle
- Patent number 5,248,007
- Issue date Sep 28, 1993
- Quest Technologies, Inc.
- Baxter R. Watkins
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Wheelchair stair climbing control system
- Patent number 5,123,495
- Issue date Jun 23, 1992
- Quest Technologies, Inc.
- Douglas J. Littlejohn
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE