TREA

Gary L. Spence

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  • Amarillo, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Manufacture of copper rod
    • Patent number 5,293,924
    • Issue date Mar 15, 1994
    • ASARCO Incorporated
    • John R. Hugens
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...