Patents by Inventor Derrell D. Nowell

Derrell D. Nowell 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).

  • Automobile electric door lock safety system and method for preventing the inadvertent locking of keys in an automobile
    Patent number: 5504377
    Abstract: A system to disable the electric door lock mechanism of an automobile when the key is in the ignition and the driver's side door is open comprising a normal closed switch spliced into the electric door mechanism wires and the door chime system wires. The system prevents a driver from inadvertently locking their keys in an automobile and can be easily installed in most vehicle with electric door locks.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: April 2, 1996
    Inventor: Derrell D. Nowell