Patents by Inventor Thomas A. Hargrave

Thomas A. Hargrave 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).

  • Electrical interlock
    Patent number: 4370694
    Abstract: A radio transmitter is protected against the possibility of initiating transmission without the radio being connected to a load by having a switch that controls a push-to-talk key line that is only enabled when the antenna load is connected to the transmitter.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: January 25, 1983
    Assignee: Rockwell International Corporation
    Inventor: Thomas A. Hargrave