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发明名称
Friction device
摘要
申请公布号
US2116130(A)
申请公布日期
1938.05.03
申请号
US19370171620
申请日期
1937.10.29
申请人
METER WILLIAM L VAN
发明人
METER WILLIAM L. VAN
分类号
D04B11/00
主分类号
D04B11/00
代理机构
代理人
主权项
地址
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