Patents by Inventor Haward A. Baar, Sr.

Haward A. Baar, Sr. 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).

  • Alarm and light system
    Patent number: 3991415
    Abstract: A combination alarm and lighting system for being installed in a home so that when a person steps upon a door mat outside of the door home it closes an electrical circuit to a door bell and an electric lamp; the system accordingly including electrical circuit that includes in addition to the bell and lamp also a novel electrical switch contained within the interior of the door-mat.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: November 9, 1976
    Inventor: Haward A. Baar, Sr.