USD319683SExpiredUtility

Check valve

51
Individually held — no corporate assignee on recordPriority: Jun 15, 1987Filed: Jun 15, 1987Granted: Sep 3, 1991
Est. expiryJun 15, 2007(expired)· nominal 20-yr term from priority
Inventors:John P. Scaramucci
51
PatentIndex Score
5
Cited by
19
References
1
Claims

Claims

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

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