USD304070SExpiredUtility
Shut-off valve for specialty gases
Individually held — no corporate assignee on recordPriority: Mar 17, 1986Filed: Mar 17, 1986Granted: Oct 17, 1989
Est. expiryMar 17, 2006(expired)· nominal 20-yr term from priority
Inventors:Richard E. Hughes
51
PatentIndex Score
6
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a shut-off valve for specialty gases, as shown and described.
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