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发明名称
Alloy steel
摘要
申请公布号
US2212228(A)
申请公布日期
1940.08.20
申请号
US19400340097
申请日期
1940.06.12
申请人
ALLEGHENY LUDIUM STEEL CORPORATION
发明人
VRIES RALPH P. DE
分类号
C22C38/12
主分类号
C22C38/12
代理机构
代理人
主权项
地址
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