USD423970SExpiredUtility
Level-alert sensor
Individually held — no corporate assignee on recordPriority: Jul 23, 1999Filed: Jul 23, 1999Granted: May 2, 2000
Est. expiryJul 23, 2019(expired)· nominal 20-yr term from priority
Inventors:Alvin J Waldner
27
PatentIndex Score
4
Cited by
2
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a level-alert sensor, as shown and described.
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