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摘要
申请公布号
GB1233695(A)
申请公布日期
1971.05.26
申请号
GBD1233695
申请日期
1969.01.15
申请人
发明人
分类号
G21C13/073;G21C19/16;G21C19/20
主分类号
G21C13/073
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