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发明名称
Stable-surface alloy steel
摘要
申请公布号
US1759606(A)
申请公布日期
1930.05.20
申请号
US19260083139
申请日期
1926.01.22
申请人
LUDLUM STEEL COMPANY
发明人
VRIES RALPH P. DE
分类号
C22C38/16
主分类号
C22C38/16
代理机构
代理人
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地址
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