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发明名称
Device for exerting a frictional action
摘要
申请公布号
US2136314(A)
申请公布日期
1938.11.08
申请号
US19350042336
申请日期
1935.09.26
申请人
EMILE PETIT JEAN
发明人
PETIT JEAN EMILE
分类号
F16D51/12
主分类号
F16D51/12
代理机构
代理人
主权项
地址
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