Wyoming Inventors Database
Wyoming Inventors : Name Search Results

Ralph Conwell 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: 1274008     View patent at USPTO
    Title: CORK-EXTRACTOR
    Assignee: None
    Issue Date: July 30, 1918
    Inventor(s): Ralph Conwell, Big Piney, WY