USD667244SActiveUtility

Frame of chair backrest

52
Individually held — no corporate assignee on recordPriority: May 20, 2011Filed: May 20, 2011Granted: Sep 18, 2012
Est. expiryMay 20, 2031(~4.8 yrs left)· nominal 20-yr term from priority
Inventors:Shu O Su
52
PatentIndex Score
7
Cited by
8
References
1
Claims

Claims

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

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