Portable dual tube grain auger
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The broken lines in the figures are included for the purpose of illustrating portions of the portable dual tube grain auger and form no part of the claimed design.
Claims
The ornamental design for a portable dual tube grain auger, as shown and described.
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Type: Grant
Filed: Aug 28, 2012
Date of Patent: Feb 17, 2015
Assignee: Harvest International, Inc. (Storm Lake, IA)
Inventors: Byron J. Friesen (Storm Lake, IA), Garry D. Friesen (Storm Lake, IA), Jeff A. Sivinski (Cherokee, IA)
Primary Examiner: Cynthia Ramirez
Application Number: 29/430,564