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发明名称
PHOTOGRAPHING LENS HAVING LONG BACK-FOCAL DISTANCE
摘要
申请公布号
JPS6381309(A)
申请公布日期
1988.04.12
申请号
JP19860226541
申请日期
1986.09.25
申请人
CANON INC
发明人
SHIRAISHI AKIHIKO
分类号
G02B13/04;G02B9/64;G02B13/16
主分类号
G02B13/04
代理机构
代理人
主权项
地址
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