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Peter D. Courtois

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  • Centerville, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for lifting concrete panels
    • Patent number RE33881
    • Issue date Apr 14, 1992
    • Dayton Superior Corporation
    • Peter D. Courtois
    • 294 - Handling: hand and hoist-line implements
  • Information Patent Grant

    Adjustable hanger
    • Patent number 4,846,433
    • Issue date Jul 11, 1989
    • Dayton Superior Corporation
    • Peter D. Courtois
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Recess plug for precast concrete panels
    • Patent number 4,807,843
    • Issue date Feb 28, 1989
    • Dayton Superior Corporation
    • Peter D. Courtois
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Apparatus for casting an anchor in a concrete unit
    • Patent number 4,726,562
    • Issue date Feb 23, 1988
    • Dayton Superior Corporation
    • Peter D. Courtois
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Apparatus for lifting concrete panels
    • Patent number 4,700,979
    • Issue date Oct 20, 1987
    • Dayton Superior Corporation
    • Peter D. Courtois
    • B66 - HOISTING LIFTING HAULING