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经营范围
发明名称
Process for treating metals
摘要
申请公布号
US1955576(A)
申请公布日期
1934.04.17
申请号
US19290416296
申请日期
1929.12.24
申请人
ROLLING PROCESS, INC.
发明人
CLAPP LAWRENCE R.;FARMER RICHARD O.
分类号
C22F1/08
主分类号
C22F1/08
代理机构
代理人
主权项
地址
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