Chair back structure capable of turning over to safe seat

The convertible safety seat back structure comprises the back, a main shaft inside the back, a back shaft at the back of the back, two side plates at both sides of the back connecting with the main shaft of the back, composed of one side support section and an arm rest, a seat section at the back of...

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1. Verfasser: XIANZHENG LI
Format: Patent
Sprache:eng
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