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William M. Schaffner

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  • Pittsburgh, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of making buffing wheel
    • Patent number 4,850,158
    • Issue date Jul 25, 1989
    • William M. Schaffner
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Buffing wheel
    • Patent number 4,799,338
    • Issue date Jan 24, 1989
    • Schaffner Manufacturing Company, Inc.
    • William M. Schaffner
    • B24 - GRINDING POLISHING