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John C. Dunfield

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  • San Jose, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Impact mechanism for quiet impact printer
    • Patent number 4,737,043
    • Issue date Apr 12, 1988
    • Xerox Corporation
    • Andrew Gabor
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Print tip contact sensor for quiet impact printer
    • Patent number 4,678,355
    • Issue date Jul 7, 1987
    • Xerox Corporation
    • Andrew Gabor
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Quiet impact printer
    • Patent number 4,668,112
    • Issue date May 26, 1987
    • Xerox Corporation
    • Andrew Gabor
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Adaptive print hammer damper
    • Patent number 4,538,930
    • Issue date Sep 3, 1985
    • Xerox Corporation
    • John C. Dunfield
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Motion damping apparatus
    • Patent number 4,369,402
    • Issue date Jan 18, 1983
    • Xerox Corporation
    • Andrew Gabor
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Motion damping apparatus
    • Patent number 4,329,633
    • Issue date May 11, 1982
    • Xerox Corporation
    • John C. G. Dunfield
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Motion sensing apparatus
    • Patent number 4,329,634
    • Issue date May 11, 1982
    • Xerox Corporation
    • John C. G. Dunfield
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Motion sensing apparatus
    • Patent number 4,328,453
    • Issue date May 4, 1982
    • Xerox Corporation
    • Michael G. Demeny
    • G01 - MEASURING TESTING