Patents by Inventor William H. Windel

William H. Windel 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).

  • Automatic dialing and alarm system
    Patent number: 4461927
    Abstract: A system is disclosed which may readily be added to an existing system of phones and electrical outlets. It includes circuitry that, responsive to sensing of a condition, seizes a telephone line, dials a single digit and introduces a preferably beeping signal into the line to warn the switchboard operator of the sensed condition. The system repeats the cycle until the sensed condition ceases.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: July 24, 1984
    Inventors: Ronald E. Olson, William H. Windel, John M. Harrison