Patents by Inventor William A. Hahs

William A. Hahs 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).

  • Dual-pump coupling
    Patent number: 4118142
    Abstract: An adjustable coupling for operatively connecting the shaft of a low-pressure deep well pump to the shaft of a high-pressure booster pump whereby both pumps may be driven by a common prime mover.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: October 3, 1978
    Inventor: William A. Hahs