TREA

Howard A. Dowell

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  • Downingtown, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Protection against soiling
    • Patent number 4,525,501
    • Issue date Jun 25, 1985
    • Enterra Corporation
    • Edward C. Norman
    • B08 - CLEANING
  • Information Patent Grant

    Protection against soiling
    • Patent number 4,347,266
    • Issue date Aug 31, 1982
    • Enterra Corporation
    • Edward C. Norman
    • B08 - CLEANING