TREA

Hans-Joachim Ahrens

Follow

Person

  • Wernigerode, DE
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Dispenser pump
    • Patent number 7,757,900
    • Issue date Jul 20, 2010
    • RPC Wiko GmbH
    • Roland Knauer
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Ink writing implement
    • Patent number 5,427,463
    • Issue date Jun 27, 1995
    • rotring international GmbH & Co. KG
    • Bernd Bastiansen
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Drawing pen
    • Patent number 5,242,234
    • Issue date Sep 7, 1993
    • Hans-Joachim Ahrens
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    Dispenser pump
    • Publication number 20070138209
    • Publication date Jun 21, 2007
    • Roland Knauer
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...