USD421102SExpiredUtility
Drain construction
Individually held — no corporate assignee on recordPriority: Feb 26, 1999Filed: Feb 26, 1999Granted: Feb 22, 2000
Est. expiryFeb 26, 2019(expired)· nominal 20-yr term from priority
Inventors:Ralph L. Barnett
54
PatentIndex Score
8
Cited by
3
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a drain construction, as shown and described.
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