John W. Hoornstra

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Vassar, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Contoured seating construction and method
- Patent number 5,449,478
- Issue date Sep 12, 1995
- Gunnell, Inc.
- Dwight S. Gay
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Wheelchair footrest assembly
- Patent number 5,209,509
- Issue date May 11, 1993
- Gunnell, Inc.
- Dwight S. Gay
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Chair construction for incapacitated persons
- Patent number 4,893,827
- Issue date Jan 16, 1990
- Gunnell, Inc.
- Dwight S. Gay
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE