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发明名称
DRILLING DEVICE FOR ELEVATOR SHAFT WALL
摘要
申请公布号
JPH04354780(A)
申请公布日期
1992.12.09
申请号
JP19910153827
申请日期
1991.05.30
申请人
HITACHI BUILDING SYST ENG & SERVICE CO LTD
发明人
KANAYAMA RYOETSU
分类号
B66B7/00
主分类号
B66B7/00
代理机构
代理人
主权项
地址
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