Wyoming Inventors Database
Wyoming Inventors : Name Search Results

John Humphreys 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: 1492984     View patent at USPTO
    Title: COMBINATION TOOL
    Assignee: None
    Issue Date: May 6, 1924
    Inventor(s): John Humphreys, Casper, WY

  2. Patent Number: 1562886     View patent at USPTO
    Title: TRACK LINER
    Assignee: None
    Issue Date: November 24, 1925
    Inventor(s): John Humphreys, Casper, WY