Arnold O. DeHart

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Rochester, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Line boring apparatus
- Patent number 4,693,642
- Issue date Sep 15, 1987
- General Motors Corporation
- Alexander C. Mair
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Combined vacuum pump, bearing and seal assembly
- Patent number 4,645,414
- Issue date Feb 24, 1987
- General Motors Corporation
- Arnold O. DeHart
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Sealing surface and method
- Patent number 4,573,690
- Issue date Mar 4, 1986
- General Motors Corporation
- Arnold O. DeHart
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Low friction dynamic seal assembly with centrifugal deflection
- Patent number 4,572,516
- Issue date Feb 25, 1986
- General Motors Corporation
- James D. Symons
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Bearing having nickel-tin-copper barrier layer
- Patent number 4,553,856
- Issue date Nov 19, 1985
- General Motors Corporation
- John C. Bierlein
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...