TREA

Robert R. Rositch

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  • Spring Lake, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing a piston ring
    • Patent number 4,247,972
    • Issue date Feb 3, 1981
    • Sealed Power Corporation
    • John L. Hendrixon
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Piston ring and method of manufacture
    • Patent number 4,161,321
    • Issue date Jul 17, 1979
    • Sealed Power Corporation
    • John L. Hendrixon
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...