Patents by Inventor Jean-Rene Bannwart

Jean-Rene Bannwart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ballpoint pen
    Patent number: D331260
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: November 24, 1992
    Assignee: Corum, Ries, Bannwart et Co S.A.
    Inventor: Jean-Rene Bannwart
  • Fountain pen
    Patent number: D331261
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: November 24, 1992
    Assignee: Corum, Ries, Bannwart et Co. S.A.
    Inventor: Jean-Rene Bannwart