David A. Hoptry

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Grand Blanc, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Attachment device
- Patent number 5,716,154
- Issue date Feb 10, 1998
- General Motors Corporation
- Marvin Herbert Miller
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Motor vehicle suspension with damper having a quickly stopped rotat...
- Patent number 5,163,703
- Issue date Nov 17, 1992
- General Motors Corporation
- David A. Shal
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Motor vehicle suspension with damper having rotatable member positi...
- Patent number 5,150,915
- Issue date Sep 29, 1992
- General Motors Corporation
- David A. Hoptry
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Motor vehicle suspension with damper having rotatable member overru...
- Patent number 5,150,916
- Issue date Sep 29, 1992
- General Motors Corporation
- James M. Petrofes
- B60 - VEHICLES IN GENERAL