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发明名称
INFORMATION RETRIEVING DEVICE
摘要
申请公布号
JPH01259343(A)
申请公布日期
1989.10.17
申请号
JP19880088412
申请日期
1988.04.11
申请人
CANON INC
发明人
ITO MASAHIKO
分类号
G03B21/11;G03B1/42
主分类号
G03B21/11
代理机构
代理人
主权项
地址
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