USD296365SExpiredUtility

Construction block

98
Assignee: KEYSTONE RETAINING WALL SYSTEMS INCPriority: Sep 18, 1986Filed: Sep 18, 1986Granted: Jun 21, 1988
Est. expirySep 18, 2006(expired)· nominal 20-yr term from priority
Inventors:Paul J. Forsberg
98
PatentIndex Score
79
Cited by
31
References
1
Claims

Claims

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

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