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Donald K. Ross

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  • Eastlake, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electrically scoring dart board
    • Patent number 4,852,888
    • Issue date Aug 1, 1989
    • Donald K. Ross
    • F41 - WEAPONS
  • Information Patent Grant

    Reverse lip positive venting seal
    • Patent number 4,616,836
    • Issue date Oct 14, 1986
    • Chicago Rawhide Mfg. Co.
    • Gordon T. Drygalski
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Reverse lip positive venting seal
    • Patent number 4,556,225
    • Issue date Dec 3, 1985
    • Chicago Rawhide Mfg. Co.
    • Gordon T. Drygalski
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...