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John D. Wallace

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  • Newburyport, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lens focus shift sensor
    • Patent number 5,991,004
    • Issue date Nov 23, 1999
    • MRS Technology, Inc.
    • John D. Wallace
    • G02 - OPTICS
  • Information Patent Grant

    Non-contact edge detector
    • Patent number 5,739,913
    • Issue date Apr 14, 1998
    • MRS Technology, Inc.
    • John D. Wallace
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Distance and tilt sensing apparatus
    • Patent number 5,101,226
    • Issue date Mar 31, 1992
    • General Signal Corporation
    • David R. Beaulieu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY