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发明名称
Method of making friction equalizing materials
摘要
申请公布号
US1845056(A)
申请公布日期
1932.02.16
申请号
US19250060929
申请日期
1925.10.06
申请人
JOHN WARREN WATSON COMPANY
发明人
NOWALK ROBERT F.
分类号
C04B24/08;C04B41/46;C04B41/82
主分类号
C04B24/08
代理机构
代理人
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地址
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