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发明名称
摘要
申请公布号
BG22923(A1)
申请公布日期
1977.05.20
申请号
BG19750030470
申请日期
1975.07.05
申请人
发明人
分类号
(IPC1-7):C12D13/10
主分类号
(IPC1-7):C12D13/10
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