TREA

Gunter Wolfertz

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  • Wuppertal, DT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Button, particularly for clothing pieces
    • Patent number 4,033,012
    • Issue date Jul 5, 1977
    • Schaeffer-Homberg GmbH
    • Friedhelm Kramer
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Snap fastener
    • Patent number 3,979,802
    • Issue date Sep 14, 1976
    • Firma Schaeffer-Homberg GmbH
    • Heinz Bertram Bongartz
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Machine for the attachment of fasteners
    • Patent number 3,934,777
    • Issue date Jan 27, 1976
    • Firma Schaeffer-Homberg GmbH
    • Friedhelm Kramer
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...