TREA

Georg Sitterer

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  • Graben, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Diamond drawing die and setting combination
    • Patent number 4,378,690
    • Issue date Apr 5, 1983
    • Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
    • Wolfram Stiebritz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...