TREA

Harold L. Zimmerly

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  • San Gabriel, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chain door lock
    • Patent number 4,623,180
    • Issue date Nov 18, 1986
    • Harold L. Zimmerly
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Internal combustion engine
    • Patent number 4,305,349
    • Issue date Dec 15, 1981
    • Harold L. Zimmerly
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS