Patents by Inventor Lawrence Youhanian

Lawrence Youhanian 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).

  • Patent number: 5040390
    Abstract: The disclosure involves a lock and control assembly which can be either manually operated after insertion of a key in a lock cylinder or electrically energized by a switch from a remote location so that it can be thereafter manually manipulated without insertion of the key in the lock cylinder. The lock and control assembly also includes a mechanical override means to enable it to be actuated to its locked position, but not its unlocked position, in the event of an electrical power failure or a failure in the energizable means.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: August 20, 1991
    Assignee: General Motors Corporation
    Inventors: Narhari C. Mistry, Thomas Grzanka, Lawrence Youhanian