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经营范围
发明名称
Titanium concentrates
摘要
申请公布号
US2631941(A)
申请公布日期
1953.03.17
申请号
US19490093752
申请日期
1949.05.17
申请人
NATIONAL LEAD COMPANY
发明人
COLE SANDFORD S.
分类号
C22B34/12
主分类号
C22B34/12
代理机构
代理人
主权项
地址
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