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发明名称
DETECTOR FOR DIRECTION OF PROPULSION IN UNDERGROUND BORING MACHINE
摘要
申请公布号
JPS63103193(A)
申请公布日期
1988.05.07
申请号
JP19860246595
申请日期
1986.10.16
申请人
KYOKUTO KAIHATSU KOGYO CO LTD;KANPAI:KK
发明人
OTSUKA TADAO;HIRAI MASAHIRO;YASUDA MASAO;HORIE HIROMOTO
分类号
E21B7/26;E21D9/06
主分类号
E21B7/26
代理机构
代理人
主权项
地址
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