Patents by Inventor Michael S. Abraham

Michael S. Abraham 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).

  • Cartridge valve
    Patent number: 4787412
    Abstract: A cartridge valve having a valve housing adapted to receive a valve cartridge containing a spool and intake and exhaust passages.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: November 29, 1988
    Assignee: Hagglunds Denison
    Inventors: Richard Wigmore, Michael S. Abraham