Wyoming Inventors Database
Wyoming Inventors : Name Search Results

Stephen Swanson 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: 1138998     View patent at USPTO
    Title: EXTENSION CAR-STEP
    Assignee: None
    Issue Date: May 11, 1915
    Inventor(s): Stephen J. Swanson, Riverton, WY