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经营范围
发明名称
Alloy steel
摘要
申请公布号
US1778226(A)
申请公布日期
1930.10.14
申请号
US19250056133
申请日期
1925.09.14
申请人
BARBER-COLMAN COMPANY
发明人
NELSON JOHN A.
分类号
C22C38/24
主分类号
C22C38/24
代理机构
代理人
主权项
地址
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