TREA

David W. Campbell

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  • Bethel Park, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Overflow for slurry tank
    • Patent number 4,693,826
    • Issue date Sep 15, 1987
    • Conoco Inc.
    • Jeffrey L. Beck
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Revolving separator
    • Patent number 4,676,810
    • Issue date Jun 30, 1987
    • Conoco Inc.
    • Ahmed A. El-Saie
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL