USD452899SExpiredUtility
Emergency relief drain
Priority: Feb 21, 2001Filed: Feb 21, 2001Granted: Jan 8, 2002
Est. expiryFeb 21, 2021(expired)· nominal 20-yr term from priority
Inventors:Steven R. Salisbury
50
PatentIndex Score
15
Cited by
7
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an emergency relief drain, as shown and described.
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