TREA

Josef Risthaus

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  • Dorsten, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Contactor and/or circuit breaker
    • Patent number 4,931,757
    • Issue date Jun 5, 1990
    • Square D Starkstrom GmbH
    • Helmut Lemmer
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Circuit-breaker
    • Patent number 4,713,636
    • Issue date Dec 15, 1987
    • Square D Starkstrom GmbH
    • Helmut Lemmer
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Motor safety switch
    • Patent number 4,688,011
    • Issue date Aug 18, 1987
    • Square D Starkstrom GmbH
    • Helmut Lemmer
    • H01 - BASIC ELECTRIC ELEMENTS