TREA

David M. Gilson

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  • Columbus, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Riser sleeves for custom sizing and firm gripping
    • Patent number 5,915,450
    • Issue date Jun 29, 1999
    • Ashland Inc.
    • Ronald C. Aufderheide
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Riser sleeve
    • Patent number D397702
    • Issue date Sep 1, 1998
    • Ronald C. Aufderheide
    • D15 - Machines not elsewhere specified