Patents by Inventor James L. Witherell

James L. Witherell 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: 4480999
    Abstract: An assembly of parts for attachment to a firearm that provides a kickback reaction when the trigger is pulled without the use of live ammunition. A power source operates a drive means attached to the firearm to push back a slide which cocks the firearm hammer. A control means is interposed between the drive means and power source to regulate operation in response to the hammer position.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: November 6, 1984
    Assignee: Advanced .45 Technology
    Inventors: James L. Witherell, Michael D. Tibbet