TREA

David L. Gardner

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  • Conroe, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pipe coating apparatus
    • Patent number 4,333,783
    • Issue date Jun 8, 1982
    • David L. Gardner
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Pipe coating machine
    • Patent number 4,058,428
    • Issue date Nov 15, 1977
    • Compression Coat Corporation
    • Patrick P. Case
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Pipe coating apparatus
    • Patent number 4,006,049
    • Issue date Feb 1, 1977
    • David L. Gardner
    • B28 - WORKING CEMENT, CLAY, OR STONE