USD540580SExpiredUtility

Chair backrest

84
Assignee: SU TUNG-HUAPriority: Dec 31, 2005Filed: Dec 31, 2005Granted: Apr 17, 2007
Est. expiryDec 31, 2025(expired)· nominal 20-yr term from priority
Inventors:Tung-Hua Su
84
PatentIndex Score
30
Cited by
13
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for a chair backrest, as shown and described.

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