TREA

Weldon K. Johnson

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  • Boise, ID, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Particulate material transfer system
    • Patent number 4,417,840
    • Issue date Nov 29, 1983
    • Kerr-McGee Coal Corporation
    • Weldon K. Johnson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Particulate material transfer system
    • Patent number 4,396,339
    • Issue date Aug 2, 1983
    • Kerr-McGee Coal Corporation
    • Weldon K. Johnson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Particulate material transfer system
    • Patent number 4,290,725
    • Issue date Sep 22, 1981
    • Kerr-McGee Coal Corporation
    • Weldon K. Johnson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Articulate material transfer system
    • Patent number 4,277,215
    • Issue date Jul 7, 1981
    • Kerr-McGee Coal Corporation
    • Weldon K. Johnson
    • B61 - RAILWAYS