Patents by Inventor Manfred Buhner

Manfred Buhner 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).

  • Thirteen-month calendar
    Patent number: D351414
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: October 11, 1994
    Inventor: Manfred Buhner
  • Combined calendar and map
    Patent number: D360896
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: August 1, 1995
    Inventor: Manfred Buhner
  • Pin
    Patent number: D390605
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: February 10, 1998
    Inventor: Manfred Buhner