Invention Grant
US3899015A Pneumatic tires 失效
气动轮胎

Pneumatic tires
Abstract:
A pneumatic tire having a tread supported by a belt. The belt contains at least two plies which are folded over to form folded edges one on either side of the center. Each of these plies extends from one shoulder region to the other and is there folded back radially outwardly upon itself.
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