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发明名称
Product for improving the quality of cast iron and for the manufacture of ferromanganese
摘要
申请公布号
US2130228(A)
申请公布日期
1938.09.13
申请号
US19360069164
申请日期
1936.03.16
申请人
CLARKE HENRY R
发明人
CLARKE HENRY R.
分类号
C21C1/00
主分类号
C21C1/00
代理机构
代理人
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地址
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