DuWayne Marthaller 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: 6272775 View patent at USPTO Title: REAR DUMPING DRAGLINE BUCKET AND RIGGING SYSTEM Assignee: None Issue Date: August 14, 2001 Inventor(s): Dean Bray, Bismarck, ND
Karl Lemmerman, Bismarck, ND
William Lengenfelder, Bismarck, ND
DuWayne A. Marthaller, Mandan, ND
R. Steven Metzger, Casper, WY
Don F. Schmidt, Bismarck, ND