TREA

Sixten H. Lejdegard

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  • Ramnas, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-tapping screw
    • Patent number 4,161,132
    • Issue date Jul 17, 1979
    • Bulten-Kanthal Aktiebolog
    • Ingvar A. Eklund
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...