USD315399SExpiredUtility
Tank shut-off valve
Individually held — no corporate assignee on recordPriority: Feb 21, 1989Filed: Feb 21, 1989Granted: Mar 12, 1991
Est. expiryFeb 21, 2009(expired)· nominal 20-yr term from priority
Inventors:Bruce D. Burrows
35
PatentIndex Score
1
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a tank shut-off valve, as shown and described.
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