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经营范围
发明名称
Slag cement
摘要
申请公布号
US1912815(A)
申请公布日期
1933.06.06
申请号
US19310552541
申请日期
1931.07.22
申请人
GEORGE WITTY
发明人
WITTY GEORGE
分类号
C04B28/08
主分类号
C04B28/08
代理机构
代理人
主权项
地址
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