Patents by Inventor Hans DE Vries

Hans DE Vries 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).

  • Current-supply arrangement for an electronic remote control receiver
    Patent number: 3978388
    Abstract: A current supply arrangement for an electronic remote control receiver, wherein a series circuit comprising a protective impedance, a capacitor and a full-wave rectifier is connected between two input terminals intended for connection to an alternating current network, a voltage limiter is operatively associated with the full-wave rectifier.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: August 31, 1976
    Assignee: Zellweger Uster Ltd.
    Inventor: Hans DE Vries