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经营范围
发明名称
(A) ;Heat resistant low expansion alloy
摘要
申请公布号
US4200459(B1)
申请公布日期
1983.08.23
申请号
US19770860298
申请日期
1977.12.14
申请人
发明人
分类号
C22C19/00;C22C19/05;C22C38/10
主分类号
C22C19/00
代理机构
代理人
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