USD257566SExpiredUtility

Liquid level control valve

57
Individually held — no corporate assignee on recordPriority: Jan 13, 1978Filed: Jan 13, 1978Granted: Nov 25, 1980
Est. expiryJan 13, 1998(expired)· nominal 20-yr term from priority
Inventors:Kent L. KottmeierAnthony M. Kottmeier
57
PatentIndex Score
11
Cited by
3
References
1
Claims

Claims

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

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