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George Ryckman

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  • East Liverpool, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Oval dish forming method and machine
    • Patent number 4,368,021
    • Issue date Jan 11, 1983
    • Service (Engineers) Limited
    • George Ryckman
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Oval dish former
    • Patent number 4,286,938
    • Issue date Sep 1, 1981
    • Service (Engineers) Limited
    • George Ryckman
    • B28 - WORKING CEMENT, CLAY, OR STONE