IP Library › Granted Patent US 6,447,213
Granted Patent Utility
US 6,447,213 · App. 09/652,566

Retaining wall block system and method with varying block face sizes

Inventor: Robert A. MacDonald
Patented Case View Patent ↗
Granted: Sep 10, 2002 Filed: Aug 31, 2000
Inventor
Robert A. MacDonald
Assignee (at issue)
Keystone Retaining Wall Systems, LLC

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Quick Facts
Patent No.
US 6,447,213
App. No.
09/652,566
Filed
2000-08-31
Granted
2002-09-10
Kind
B1