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发明名称
IMPROVEMENTS IN MATERIALS
摘要
申请公布号
GB9019082(D0)
申请公布日期
1990.10.17
申请号
GB19900019082
申请日期
1990.09.01
申请人
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
发明人
分类号
C22C38/00;H01L41/20
主分类号
C22C38/00
代理机构
代理人
主权项
地址
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