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William Boyd Dempster

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  • Kettering, EN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of rotational molding a rectangular mat
    • Patent number 3,997,645
    • Issue date Dec 14, 1976
    • Canathane Roller Corporation
    • William Boyd Dempster
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL