USD337152SExpiredUtility

Vent stack cover

9
Individually held — no corporate assignee on recordPriority: Apr 4, 1991Filed: Apr 4, 1991Granted: Jul 6, 1993
Est. expiryApr 4, 2011(expired)· nominal 20-yr term from priority
Inventors:Robert Smart
9
PatentIndex Score
1
Cited by
9
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a vent stack cover, as shown and described.

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