USD296007SExpiredUtility
Wall block
Assignee: KEYSTONE RETAINING WALL SYSTEMS INCPriority: May 27, 1986Filed: May 27, 1986Granted: May 31, 1988
Est. expiryMay 27, 2006(expired)· nominal 20-yr term from priority
Inventors:Paul J. Forsberg
99
PatentIndex Score
109
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32
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design of a wall block, substantially as shown and described.
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