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J.F. HELMOLD & BRO., INC

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  • ELK GROVE VILLAGE, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Laser hardened steel cutting rule
    • Patent number 6,218,642
    • Issue date Apr 17, 2001
    • J. F. Helmold & Bro., Inc.
    • Darryl L. Christmas
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR