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经营范围
发明名称
Electric furnace product
摘要
申请公布号
US2849305(A)
申请公布日期
1958.08.26
申请号
US19540453109
申请日期
1954.08.30
申请人
NATIONAL LEAD COMPANY
发明人
FROST LEON J.
分类号
C04B35/107;C09K3/14
主分类号
C04B35/107
代理机构
代理人
主权项
地址
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