Patents by Inventor Thomas A. Karg

Thomas A. Karg 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).

  • Oil well pump control
    Patent number: 4874294
    Abstract: An oil well pump control for regulating operation of a pumping apparatus such as a pumping jack through a timing system which is actuated by the fluid pulses or surges that result from the pumping action of the pump.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: October 17, 1989
    Inventor: Thomas A. Karg