Patents by Inventor Doug Fitzpatrick

Doug Fitzpatrick 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: 4125163
    Abstract: A system for maintaining well bore fluid level to increase oil well production. The fluid level is monitored by a down hole pressure sensing device which relays the fluid level information to the surface by acoustical transmissions where, based on the information received, the speed of the pumping is varied to maintain an optimum fluid level.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: November 14, 1978
    Assignee: Basic Sciences, Inc.
    Inventor: Doug Fitzpatrick