USD251255SExpiredUtility

Butterfly valve

70
Assignee: CRANE COPriority: May 18, 1977Filed: May 18, 1977Granted: Mar 6, 1979
Est. expiryMay 18, 1997(expired)· nominal 20-yr term from priority
Inventors:George E. HansenJohn A. Mcinerney
70
PatentIndex Score
12
Cited by
3
References
1
Claims

Claims

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

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