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经营范围
发明名称
HORIZONTAL TUNNEL EXCAVATOR
摘要
申请公布号
JPH0427094(A)
申请公布日期
1992.01.30
申请号
JP19900131688
申请日期
1990.05.22
申请人
OSAKA GAS CO LTD;NIPPON TELEGR & TELEPH CORP <NTT>;HITACHI CONSTR MACH CO LTD
发明人
ISHIKAWA TETSUO;ADACHI SUSUMU;KONO SADAO;UCHIDA TAKENORI;IIDA TAKEO
分类号
E21B7/04
主分类号
E21B7/04
代理机构
代理人
主权项
地址
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