TREA

David Porter Welch

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  • West Chester, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Web unwind-splicer apparatus
    • Patent number 4,676,447
    • Issue date Jun 30, 1987
    • The Procter & Gamble Company
    • Roberta L. Zald
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Continuous motion spiral stacker
    • Patent number 4,547,113
    • Issue date Oct 15, 1985
    • The Procter & Gamble Company
    • David P. Welch
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents