TREA

Duane E. Thewlis

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  • Norton, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for making an inflatable mandrel
    • Patent number 4,707,205
    • Issue date Nov 17, 1987
    • Marshall E. Bishop
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Inflatable mandrel and method therefor
    • Patent number 4,632,328
    • Issue date Dec 30, 1986
    • The B. F. Goodrich Company
    • Marshall E. Bishop
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL