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发明名称
METAL SCRAP REFINING PROCESS
摘要
申请公布号
CA352033(A)
申请公布日期
1935.07.30
申请号
CAD352033
申请日期
申请人
THE NATIONAL LEAD COMPANY
发明人
WILLIAM A. COWAN
分类号
主分类号
代理机构
代理人
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地址
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