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发明名称
DISPLACEMENT ENLARGEMENT DEVICE
摘要
申请公布号
JPH03231714(A)
申请公布日期
1991.10.15
申请号
JP19900027988
申请日期
1990.02.07
申请人
RICOH CO LTD
发明人
OIKAWA TOMOHIRO;TOMITA HIROSHI
分类号
G02B26/10;H01F7/06
主分类号
G02B26/10
代理机构
代理人
主权项
地址
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