USD319286SExpiredUtility

Corrugated valve guard

38
Assignee: HOOVER GROUP INCPriority: Aug 15, 1988Filed: Aug 15, 1988Granted: Aug 20, 1991
Est. expiryAug 15, 2008(expired)· nominal 20-yr term from priority
Inventors:David L. WaltkeDuane R. Greenquist
38
PatentIndex Score
3
Cited by
13
References
1
Claims

Claims

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

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