USD402907SExpiredUtility
Frost protection device for water meter pits
Individually held — no corporate assignee on recordPriority: Nov 17, 1997Filed: Nov 17, 1997Granted: Dec 22, 1998
Est. expiryNov 17, 2017(expired)· nominal 20-yr term from priority
Inventors:Thomas Ruff
36
PatentIndex Score
6
Cited by
1
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a frost protection device for water meter pits, as shown and described.
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