USD266518SExpiredUtility
Remote control oil sump drain valve
Individually held — no corporate assignee on recordPriority: May 27, 1980Filed: May 27, 1980Granted: Oct 12, 1982
Est. expiryMay 27, 2000(expired)· nominal 20-yr term from priority
Inventors:Warner Olan Harris
51
PatentIndex Score
6
Cited by
14
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a remote control oil sump drain valve, as shown.
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