USD331469SExpiredUtility

Spacer joint for use in a block wall

84
Assignee: PITTSBURGH CORNING CORPPriority: Aug 31, 1990Filed: Aug 31, 1990Granted: Dec 1, 1992
Est. expiryAug 31, 2010(expired)· nominal 20-yr term from priority
Inventors:Robert M. Mcmarlin
84
PatentIndex Score
32
Cited by
32
References
1
Claims

Claims

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

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