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发明名称
Device for roughening roll surfaces
摘要
申请公布号
US2121959(A)
申请公布日期
1938.06.28
申请号
US19350053941
申请日期
1935.12.11
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
FRANK GEORGE H.
分类号
B21B27/00
主分类号
B21B27/00
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代理人
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