USD317048SExpiredUtility

Wall block

99
Assignee: KEYSTONE RETAINING WALL SYSTEMS INCPriority: Nov 21, 1988Filed: Nov 21, 1988Granted: May 21, 1991
Est. expiryNov 21, 2008(expired)· nominal 20-yr term from priority
Inventors:Paul J. Forsberg
99
PatentIndex Score
200
Cited by
40
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a wall block, as shown and described.

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