TREA

John Ford Harper

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  • Portland, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Barrel-finishing apparatus
    • Patent number 4,308,693
    • Issue date Jan 5, 1982
    • Harper Buffing Machine Co.
    • John F. Harper
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Automatic buffing machine
    • Patent number 3,946,525
    • Issue date Mar 30, 1976
    • John Ford Harper
    • B24 - GRINDING POLISHING