Wyoming Inventors Database
Wyoming Inventors : Name Search Results

John Francis has a total of 1 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: 1889283     View patent at USPTO
    Title: ROTARY JAR
    Assignee: None
    Issue Date: November 29, 1932
    Inventor(s): John Arthur Francis, Grass Creek, WY