TREA

William L. Douma

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  • West Paterson, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Light reflector structure
    • Patent number 4,242,725
    • Issue date Dec 30, 1980
    • Sun Chemical Corporation
    • William L. Douma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Direct flame drying apparatus (RM-30C)
    • Patent number 4,165,966
    • Issue date Aug 28, 1979
    • Sun Chemical Corporation
    • Edward J. Whelan
    • F26 - DRYING
  • Information Patent Grant

    Direct flame drying apparatus
    • Patent number 4,052,152
    • Issue date Oct 4, 1977
    • Sun Chemical Corporation
    • Edward J. Whelan
    • F26 - DRYING