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发明名称
摘要
申请公布号
DE3504938(C2)
申请公布日期
1992.05.21
申请号
DE19853504938
申请日期
1985.02.13
申请人
CANON K.K., TOKIO/TOKYO, JP
发明人
ECHIZEN, HIROSHI;SUZUKI, AKIYOSHI, TOKIO/TOKYO, JP
分类号
G03F7/20
主分类号
G03F7/20
代理机构
代理人
主权项
地址
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