Robert Elder 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.
Patent Number: 4904154 View patent at USPTO Title: LOADING SYSTEM FOR RAILROAD CARS Assignee: Kerr McGee Coal Corporation Issue Date: February 27, 1990 Inventor(s): John A.L. Campbell, Oklahoma City, OK
Robert L. Elder, Columbus, MS
Tony G. Gardner, Oklahoma City, OK
Jerry L. Hughes, Gillette, WY
Kenneth E. Krause, Edmond, OK
Ronald K. Pepper, Moore, OK