USD519601SExpiredUtility

Underdrain

71
Assignee: RG DELAWARE INCPriority: Sep 17, 2004Filed: Sep 17, 2004Granted: Apr 25, 2006
Est. expirySep 17, 2024(expired)· nominal 20-yr term from priority
Inventors:Mark Kevin Addison
71
PatentIndex Score
14
Cited by
17
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for an underdrain, as shown and described.

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