Patents by Inventor Hans U. Schade

Hans U. Schade 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).

  • Heater
    Patent number: D257059
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: September 23, 1980
    Assignee: Firma Petz Electro
    Inventor: Hans U. Schade
  • Fan-forced heater
    Patent number: D277130
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: January 8, 1985
    Assignee: Elektro-Warmetechnik Siegfried Petz Co.
    Inventor: Hans U. Schade
  • Heater
    Patent number: D313271
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: December 25, 1990
    Inventor: Hans U. Schade