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发明名称
摘要
申请公布号
BE669452(A)
申请公布日期
1965.12.31
申请号
BED669452
申请日期
1965.09.10
申请人
发明人
分类号
G03C1/675;G03C1/73
主分类号
G03C1/675
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代理人
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地址
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