Patents by Inventor Glenn J. Doell

Glenn J. Doell 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).

  • Appliance door alarm apparatus
    Patent number: 4894643
    Abstract: An aural or visual alarm is arranged to be actuated upon leaving a door to an appliance open longer than a preselected period of time. An automatically resettable disarming device may be included to permit leaving the door open intentionally for an extended time to permit appliance cleaning or the like.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: January 16, 1990
    Assignee: Texas Instruments Incorporated
    Inventors: Herbert A. Thompson, Glenn J. Doell