发明授权
US4372611A Seat with adjustable back 失效
座椅带可调节背部

Seat with adjustable back
摘要:
A seat having a back frame pivotally mounted on a seat frame for tilting the back frame relative to the seat frame and latching structure for locking the back frame in any one of several tilted positions. The latching structure comprises a notched plate pivotally mounted below the seat frame and notch-engaging means connected to and pivotable with the back frame.
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