Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Armin Roland Sander0
Cyrille Jehan Charier0
Yu-Ling Wu0
Date of Patent
July 6, 2021
0Patent Application Number
168029310
Date Filed
February 27, 2020
0Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent abstract
A twistable chair backrest frame is disclosed herein. It has a hollow section and two opposite elastic supporting ribs at a right side and a left side of the hollow section.
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