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发明名称
摘要
申请公布号
NL6802776(A)
申请公布日期
1968.08.29
申请号
NL19680002776
申请日期
1968.02.28
申请人
发明人
分类号
G02F1/015;G02F1/09;G02F2/00;(IPC1-7):G02F1/28;H03D9/00
主分类号
G02F1/015
代理机构
代理人
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