USD242709SExpiredUtility
Adjustable pressure relief valve
Individually held — no corporate assignee on recordPriority: Sep 8, 1975Filed: Sep 8, 1975Granted: Dec 14, 1976
Est. expirySep 8, 1995(expired)· nominal 20-yr term from priority
Inventors:Ralph W. Schourup
70
PatentIndex Score
14
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an adjustable pressure relief valve, as shown and described.
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