Wyoming Inventors Database
Wyoming Inventors : Name Search Results

Lemuel Johnston 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: 1706614     View patent at USPTO
    Title: METHOD OF AND APPARATUS FOR PURIFYING HYDROCARBON OIL
    Assignee: None
    Issue Date: March 26, 1929
    Note: City appears on patent as Paco
    Inventor(s): James L. Farrell, Parco, WY
    Lemuel M. Johnston, Parco, WY