Patents by Inventor Frank L. Fish

Frank L. Fish 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 pressure testing device
    Patent number: 4061015
    Abstract: A pipe pressure testing device for testing the strength of a pipe specimen hydrostatically. The device receiving fluid under pressure and applying the fluid against the inner circumference of the pipe specimen and along the length thereof.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: December 6, 1977
    Assignee: Weaver Engineering & Mfg. Co.
    Inventor: Frank L. Fish