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David M. Harrison

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  • Chester, VA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus to count and control crimps in a moving tow of yarn
    • Patent number 4,270,252
    • Issue date Jun 2, 1981
    • Allied Chemical Corporation
    • David M. Harrison
    • D02 - YARNS MECHANICAL FINISHING OF YARNS OR ROPES WARPING OR BEAMING
  • Information Patent Grant

    Spinnerette
    • Patent number 4,248,581
    • Issue date Feb 3, 1981
    • Allied Chemical Corporation
    • David M. Harrison
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING