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发明名称
Pen-point alloy
摘要
申请公布号
US1753161(A)
申请公布日期
1930.04.01
申请号
US19270241278
申请日期
1927.12.19
申请人
MESSRS. KASTENHUBER & LEHRFELD
发明人
WOODWARD JOHN E.
分类号
C22C5/04
主分类号
C22C5/04
代理机构
代理人
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地址
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