Patents by Inventor Helmut Schleicher

Helmut Schleicher 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).

  • Electronic multi-range variable resistor
    Patent number: 4274075
    Abstract: The application discloses an electronic multirange step resistor for adjustment of a timing relay with an analog adjustment which is equipped with a switch for the selection of the various resistance ranges and which is further equipped with a turning knob for the analog adjustment within each selected range.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: June 16, 1981
    Assignee: Schleicher GmbH & Co. Relais-Werke KG
    Inventor: Helmut Schleicher