Patents by Inventor Bruce W. Ehlers

Bruce W. Ehlers 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).

  • Microwave oven energy stirrer
    Patent number: 4144437
    Abstract: An energy stirrer for a microwave oven is disclosed wherein the stirrer is rotatably mounted in a manner to minimize frictional losses. The stirrer is caused to rotate by the passage of cooling and ventilating air across the blades, the air flow pattern being designed to control the direction and speed of rotation.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: March 13, 1979
    Assignee: Litton Systems, Inc.
    Inventor: Bruce W. Ehlers