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Rock S. Y. Lee

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  • St. Hubert, P.Q., CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Automatic stirring system for film developing
    • Patent number 4,540,289
    • Issue date Sep 10, 1985
    • Canadian Patents and Development Limited
    • Richard M. H. Cheng
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Hammer drill adapter
    • Patent number 4,489,792
    • Issue date Dec 25, 1984
    • Atef E. F. Fahim
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS