Patents by Inventor John M. Prestridge

John M. Prestridge 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).

  • Pipe mating swivel adapter for misaligned joints
    Patent number: 7490868
    Abstract: A device and method variously and separately used for achieving a correction between the fluid-flow interfaces of the pipe segments, pump housings and valves in pipe systems when inserted therebetween.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: February 17, 2009
    Inventor: John M. Prestridge