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经营范围
发明名称
Metal alloy
摘要
申请公布号
US2188138(A)
申请公布日期
1940.01.23
申请号
US19380243199
申请日期
1938.11.30
申请人
THE CHAPMAN VALVE MANUFACTURING COMPANY
发明人
MALCOLM VINCENT T.
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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