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发明名称
摘要
申请公布号
FR2089924(A5)
申请公布日期
1972.01.07
申请号
FR19710013945
申请日期
1971.04.20
申请人
IPC SERVICES LTD
发明人
分类号
G03C5/31;(IPC1-7):G03C5/00
主分类号
G03C5/31
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