Wyoming Inventors Database
Wyoming Inventors : Name Search Results

John Hefferon 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: 1088572     View patent at USPTO
    Title: DRAFT-REGULATOR FOR FURNACES
    Assignee: None
    Issue Date: February 24, 1914
    Inventor(s): John Hefferon, Cheyenne, WY