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发明名称
Film registration device
摘要
申请公布号
US2578514(A)
申请公布日期
1951.12.11
申请号
US19470777472
申请日期
1947.10.02
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
CONKLIN OLIVER EARLE
分类号
G03B21/43
主分类号
G03B21/43
代理机构
代理人
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地址
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