TREA

Geoffrey M. Spence

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  • Crowborough, Sussex, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for producing tubular articles
    • Patent number 4,198,843
    • Issue date Apr 22, 1980
    • Geoffrey M. Spence
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...