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发明名称
OBJECTIVE OPTICAL SYSTEM FOR ENDOSCOPE
摘要
申请公布号
JPS6026918(B2)
申请公布日期
1985.06.26
申请号
JP19780054679
申请日期
1978.05.08
申请人
HITACHI CONSTRUCTION MACHINERY
发明人
HIRANO NOBUTAKA;ISHIKAWA YASUAKI
分类号
E21B3/04;E21B7/00
主分类号
E21B3/04
代理机构
代理人
主权项
地址
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