Patents by Inventor Wilhelm Amend

Wilhelm Amend 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).

  • Locked oscillator with damped oscillatory feedback
    Patent number: 3935541
    Abstract: A circuit for locking an otherwise unstable oscillator to a frequency standard oscillation by the use of a discriminator and a differential amplifier, which amplifier produces a low-frequency output signal in response to a lack of synchronization between the oscillator being controlled and the reference oscillator.
    Type: Grant
    Filed: July 16, 1974
    Date of Patent: January 27, 1976
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wilhelm Amend, Toma Sotirovic