Patents by Inventor Curtis Jess Parker

Curtis Jess Parker 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).

  • Valve guide for poppet valve
    Patent number: 3989419
    Abstract: A poppet valve guide mechanism for use in pumps such as piston type pumps, utilizes a valve guide collar secured to a crossbar support and retained by a locking bar transverse thereto.
    Type: Grant
    Filed: July 25, 1975
    Date of Patent: November 2, 1976
    Assignee: Dresser Industries, Inc.
    Inventors: Curtis Jess Parker, Kenneth Harmon McGill