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发明名称
Perfectionnements à une matière de friction
摘要
申请公布号
FR1145018(A)
申请公布日期
1957.10.21
申请号
FRD1145018
申请日期
1956.04.03
申请人
THE S. K. WELLMAN COMPANY
发明人
分类号
F16D69/02
主分类号
F16D69/02
代理机构
代理人
主权项
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