USD516170SExpiredUtility

Vent valve

23
Individually held — no corporate assignee on recordPriority: Apr 16, 2004Filed: Apr 16, 2004Granted: Feb 28, 2006
Est. expiryApr 16, 2024(expired)· nominal 20-yr term from priority
Inventors:Frank W. Bao
23
PatentIndex Score
0
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       I claim the ornamental design for a vent valve, as shown and described.

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