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Gerold Anderka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Free ink system
    • Patent number 6,632,041
    • Issue date Oct 14, 2003
    • Sanford L.P.
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Free ink system
    • Patent number 6,322,269
    • Issue date Nov 27, 2001
    • Sanford I L.P.
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Handwriting or ink applying device
    • Patent number 6,106,180
    • Issue date Aug 22, 2000
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Vector brush
    • Patent number 5,392,520
    • Issue date Feb 28, 1995
    • rotring international GmbH & Co. KG
    • Gerold Anderka
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Tubular writting pen with superposed pressure equalization chambers
    • Patent number 4,930,921
    • Issue date Jun 5, 1990
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Spacers for use as string protectors for tennis, squach and badmint...
    • Patent number 4,863,168
    • Issue date Sep 5, 1989
    • Gerold Anderka
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Sign cutting device
    • Patent number 4,854,205
    • Issue date Aug 8, 1989
    • Rotring-Werke Riepe KG
    • Gerold Anderka
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Circular spacer inserter for stringed rackets
    • Patent number D283907
    • Issue date May 20, 1986
    • Gerold Anderka
    • D21 - Games, toys, and sports goods
  • Information Patent Grant

    Device for covering an oblong opening in a housing
    • Patent number 4,552,483
    • Issue date Nov 12, 1985
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • G12 - INSTRUMENT DETAILS
  • Information Patent Grant

    Writing instrument with separable compensating means
    • Patent number 4,549,828
    • Issue date Oct 29, 1985
    • Rotring-Werke Riepe KG
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drawing pen exchanger for computer controlled drawing machines
    • Patent number 4,496,958
    • Issue date Jan 29, 1985
    • Koh-I-Noor Rapidograph, Inc.
    • Joachim Brandt
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Device for exchanging objects in particular writing instruments
    • Patent number 4,489,333
    • Issue date Dec 18, 1984
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Automatic drafting apparatus
    • Patent number 4,459,602
    • Issue date Jul 10, 1984
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Felt tip writing pen
    • Patent number 4,382,707
    • Issue date May 10, 1983
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing apparatus
    • Patent number 4,356,632
    • Issue date Nov 2, 1982
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing fluid cartridge
    • Patent number 4,221,496
    • Issue date Sep 9, 1980
    • Mesne Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Method for regulating ink flow in drafting pens
    • Patent number 4,188,634
    • Issue date Feb 12, 1980
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Device for cleaning ink pen points
    • Patent number 4,130,444
    • Issue date Dec 19, 1978
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Rupturable sealing element within an ink reservoir cartridge
    • Patent number 4,103,999
    • Issue date Aug 1, 1978
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Capillary tube pen point
    • Patent number 4,102,584
    • Issue date Jul 25, 1978
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES