USD266019SExpiredUtility
Propane tank safety pressure vent valve
Individually held — no corporate assignee on recordPriority: Feb 19, 1980Filed: Feb 19, 1980Granted: Aug 31, 1982
Est. expiryFeb 19, 2000(expired)· nominal 20-yr term from priority
Inventors:Raymond R. Crossman
57
PatentIndex Score
13
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a propane tank safety pressure vent valve, as shown and described.
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