TREA

John Joseph Kupchick

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  • Forestville, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of forming sealing members
    • Patent number 4,078,287
    • Issue date Mar 14, 1978
    • TRW Inc.
    • John Joseph Kupchick
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...