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Bernhard Bruhn

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  • Halstenbek, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Writing instrument with press mechanism and magnetic catch
    • Patent number 4,729,685
    • Issue date Mar 8, 1988
    • Koh-I-Noor Rapidograph, Inc.
    • Bernhard Bruhn
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Pen holder device
    • Patent number 4,669,617
    • Issue date Jun 2, 1987
    • Koh-I-Noor Rapidograph, Inc.
    • Juergen Boeckmann
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ink dropper closure
    • Patent number 4,573,503
    • Issue date Mar 4, 1986
    • Koh-I-Noor Rapidograph, Inc.
    • Bernhard Bruhn
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES