USD510671SExpiredUtility
Backrest frame of a chair
Est. expiryNov 25, 2023(expired)· nominal 20-yr term from priority
Inventors:Yao-Chuan Wu
84
PatentIndex Score
28
Cited by
7
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a backrest frame of a chair, as shown and described.
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