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发明名称
摘要
申请公布号
FR2292255(B1)
申请公布日期
1982.09.10
申请号
FR19750035280
申请日期
1975.11.19
申请人
MINNESOTA MINING MANUFACTURING
发明人
分类号
G03B21/11;G06F17/30;G06K17/00;(IPC1-7):G03B1/42;G03B21/12
主分类号
G03B21/11
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