TREA

Jakob Ackermann

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  • Wigoltingen, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Flexible and extensible coated abrasive material
    • Patent number 4,606,154
    • Issue date Aug 19, 1986
    • SIA Schweizer Schmirgel- und Schleif-Industrie AG
    • Lotte Herrmann
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Abrasive material
    • Patent number 4,364,746
    • Issue date Dec 21, 1982
    • SIA, Schweizer Schmirgel- u. Schlief-Industrie AG
    • Diethelm Bitzer
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Manufacturing of flexible abrasives
    • Patent number 4,317,660
    • Issue date Mar 2, 1982
    • SIA Schweizer Schmirgel-und Schleif-Industrie AG
    • Jost Kramis
    • B24 - GRINDING POLISHING