Wyoming Inventors Database
Wyoming Inventors : Name Search Results

John Clark 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: 1494734     View patent at USPTO
    Title: AIR BRAKE
    Assignee: None
    Issue Date: May 20, 1924
    Inventor(s): John R. Clark, Casper, WY