TREA

Gottfried Ehrenstein

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  • Kassel, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-tapping screw
    • Patent number 4,527,932
    • Issue date Jul 9, 1985
    • Richard Bergner GmbH & Co.
    • Jurgen Onasch
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...