Landscape stone
Latest Keystone Retaining Wall Systems LLC Patents:
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Claims
The ornamental design for a landscape stone, as shown and described.
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Type: Grant
Filed: Dec 21, 2012
Date of Patent: Jul 16, 2013
Assignee: Keystone Retaining Wall Systems LLC (Minneapolis, MN)
Inventors: Thomas S. Riccobene (Albuquerque, NM), Robert A. MacDonald (Plymouth, MN)
Primary Examiner: Anhdao Doan
Application Number: 29/440,563