Patents by Inventor Gerhard Balder

Gerhard Balder 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).

  • Hinge component for spectacles
    Patent number: D322798
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: December 31, 1991
    Assignee: Silhouette International GmbH
    Inventor: Gerhard Balder
  • Hinge component for spectacles
    Patent number: D322799
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: December 31, 1991
    Assignee: Silhouette International GmbH
    Inventor: Gerhard Balder