发明授权
US3982335A Shoe uppers 失效
鞋面

Shoe uppers
摘要:
A shoe upper having in place of the upper leather thereof a fleeceless water vapor permeable microporous sheet of elastomeric polyurethane material having a thickness of about 0.8 - 1.8 mm. and having an extension at break of at least 200%.
信息查询
0/0