Patents by Inventor Helmut Spycher

Helmut Spycher 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).

  • Demountable antenna
    Patent number: D270054
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: August 9, 1983
    Inventor: Helmut Spycher
  • Demountable antenna
    Patent number: D271017
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: October 18, 1983
    Inventor: Helmut Spycher
  • Antenna mount
    Patent number: D272537
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: February 7, 1984
    Inventor: Helmut Spycher