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经营范围
发明名称
HORIZONTAL HOLE DRILLING APPARATUS
摘要
申请公布号
JPS6117691(A)
申请公布日期
1986.01.25
申请号
JP19840137096
申请日期
1984.07.04
申请人
TOKYO GAS KK;HITACHI KENKI KK
发明人
YOSHIDA MASASHI;HARU YASUHIKO;KOSAKA ETSUJI;IKEDA TOSHIMICHI;AOYAMA MIKIO;IIDA TAKEO
分类号
E21B7/04;E21B7/00;E21B7/08
主分类号
E21B7/04
代理机构
代理人
主权项
地址
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