using wedges

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  • CPC
  • F03C1/0689
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Patents Grantslast 30 patents

  • Information Patent Grant

    3375756

    • Patent number 3,375,756
    • Issue date Apr 2, 1968
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...

Patents Applicationslast 30 patents