USD316231SExpiredUtility

Liquid level detector control unit

Individually held — no corporate assignee on recordPriority: Sep 2, 1988Filed: Sep 2, 1988Granted: Apr 16, 1991
Est. expirySep 2, 2008(expired)· nominal 20-yr term from priority
46
PatentIndex Score
8
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a liquid level detector control unit, as shown and described.

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