Wall block
Claims
The ornamental design for a wall block, as shown and described.
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Type: Grant
Filed: Feb 11, 2010
Date of Patent: Mar 1, 2011
Assignee: Keystone Retaining Wall Systems, Inc. (Bloomington, MN)
Inventors: Robert A. MacDonald (Plymouth, MN), David M. LaCroix (St. Paul, MN)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Anhdao Doan
Attorney: Popovich, Wiles & O'Connell, P.A.
Application Number: 29/355,661