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George Berfert Groom

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  • Woodlands, Wragby, Lincoln, EN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Extrusion machine
    • Patent number 3,957,255
    • Issue date May 18, 1976
    • George Berfert Groom
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL