USD577521SActiveUtility

Chair backrest

68
Assignee: SU TUNG-HUAPriority: Apr 23, 2008Filed: Apr 23, 2008Granted: Sep 30, 2008
Est. expiryApr 23, 2028(~1.7 yrs left)· nominal 20-yr term from priority
Inventors:Tung-Hua Su
68
PatentIndex Score
15
Cited by
10
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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