Patents by Inventor Gerd Bertl

Gerd Bertl 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).

  • Disc trimmer
    Patent number: 4418376
    Abstract: A disc trimmer has two circular-like segmented condenser plates which can be rotated relative to each other. The disc trimmer has an optimally low initial capacitance, which is independent of the final capacitance, and this is achieved by forming a dielectric corresponding to the shape of at least one plate circular-like and connecting it to a plate in a way that they approximately cover each other.
    Type: Grant
    Filed: October 27, 1982
    Date of Patent: November 29, 1983
    Assignee: Stettner & Co.
    Inventor: Gerd Bertl