U.S. patent number D667,139 [Application Number D/396,298] was granted by the patent office on 2012-09-11 for landscaping block. This patent grant is currently assigned to Keystone Retaining Wall Systems LLC. Invention is credited to Robert A. MacDonald.
United States Patent | D667,139 |
MacDonald | September 11, 2012 |
Inventors: | MacDonald; Robert A. (Plymouth, MN) |
---|---|
Assignee: | Keystone Retaining Wall Systems
LLC (West Chester, OH) |
Appl. No.: | D/396,298 |
Filed: | June 28, 2011 |
Current U.S. Class: | D25/113 |
Current International Class: | 2501 |
Field of Search: | ;D25/102-118,136,138,140,151,152,153,156-162,164 ;D21/484-491,499-504 ;405/16,284,286 ;52/503-505,574,575,596-612 ;404/27-42 |
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