Wyoming Inventors Database
Wyoming Inventors : Name Search Results

William Trethewey has a total of 2 patent(s) in the database.

* Some patents in this database have one or more inventors, not all of whom may be from Wyoming.

 

  1. Patent Number: 2760510     View patent at USPTO
    Title: VOLUME CONTROL VALVE
    Assignee: None
    Issue Date: August 28, 1956
    Inventor(s): William D. Trethewey, Douglas, WY

  2. Patent Number: 2844159     View patent at USPTO
    Title: FLOW DIVIDING VALVE
    Assignee: None
    Issue Date: July 22, 1958
    Inventor(s): William D. Trethewey, Douglas, WY