USD641574SActiveUtility

Chair backrest

52
Assignee: SU TUNG-HUAPriority: May 29, 2010Filed: May 29, 2010Granted: Jul 19, 2011
Est. expiryMay 29, 2030(~3.8 yrs left)· nominal 20-yr term from priority
Inventors:Tung-Hua Su
52
PatentIndex Score
7
Cited by
9
References
1
Claims

Claims

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

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