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发明名称
Projection micro-document reading lamp device
摘要
申请公布号
US2562297(A)
申请公布日期
1951.07.31
申请号
US19460687557
申请日期
1946.08.01
申请人
GERARD CORDONNIER
发明人
CORDONNIER GERARD
分类号
G03B21/11;G03B23/12
主分类号
G03B21/11
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