TREA

Heinz Brych

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  • 5500 Trier, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Perforation hand punch
    • Patent number 4,987,683
    • Issue date Jan 29, 1991
    • Heinz Brych
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Accounting card
    • Patent number 4,622,256
    • Issue date Nov 11, 1986
    • Heinz Brych
    • G06 - COMPUTING CALCULATING COUNTING