Wyoming Inventors Database
Wyoming Inventors : Name Search Results

John McDonald 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: 990578     View patent at USPTO
    Title: SCREEN
    Assignee: Maximilian A. Mosle
    Issue Date: April 25, 1911
    Inventor(s): John R. McDonald, Circle, WY