USD329297SExpiredUtility
Foundation drain
Individually held — no corporate assignee on recordPriority: Jan 29, 1990Filed: Jan 29, 1990Granted: Sep 8, 1992
Est. expiryJan 29, 2010(expired)· nominal 20-yr term from priority
Inventors:Richard D. Smith
80
PatentIndex Score
21
Cited by
8
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for foundation drain, as shown and described.
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