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发明名称
Production of bismuth
摘要
申请公布号
US1809871(A)
申请公布日期
1931.06.16
申请号
US19280329678
申请日期
1928.12.31
申请人
CERRO DE PASCO COPPER CORPORATION
发明人
SMITH WALTER C.
分类号
C22B13/06;C22B30/06
主分类号
C22B13/06
代理机构
代理人
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地址
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