TREA

Samuel J. B. Johnston

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  • Ashford, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Disc record preparation
    • Patent number 4,349,499
    • Issue date Sep 14, 1982
    • E M I Limited
    • Samuel J. B. Johnston
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL