TREA

Wolfgang Witz

Follow

Person

  • Easton, PA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Free ink system
    • Patent number 7,101,104
    • Issue date Sep 5, 2006
    • Sanford, L.P.
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Free ink system
    • Patent number 6,695,517
    • Issue date Feb 24, 2004
    • Sanford, L.P.
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • 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

    Method and apparatus for refilling ink jet unit printer cartridges
    • Patent number 5,734,400
    • Issue date Mar 31, 1998
    • Bruce W. Brunetti
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Unitary body plotter pen
    • Patent number 5,420,615
    • Issue date May 30, 1995
    • Koh-I-Noor Inc.
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Pressure balanced stylographic pen
    • Patent number 4,753,546
    • Issue date Jun 28, 1988
    • Koh-I-Noor Rapidograph, Inc.
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drawing pen
    • Patent number D257857
    • Issue date Jan 13, 1981
    • Koh-I-Noor Rapidograph, Inc.
    • John P. Leuenberger
    • D19 - Office supplies

Patents Applicationslast 30 patents

  • Information Patent Application

    Free ink system
    • Publication number 20040170465
    • Publication date Sep 2, 2004
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Free ink system
    • Publication number 20020168215
    • Publication date Nov 14, 2002
    • Sanford North America
    • Wolfgang Witz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES