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发明名称
RITSUANAKUTSUSAKUKOHO
摘要
申请公布号
JP2633154(B2)
申请公布日期
1997.07.23
申请号
JP19920294675
申请日期
1992.11.04
申请人
OOBAYASHIGUMI KK;HITACHI ZOSEN KK
发明人
SAKAMOTO HIROSHI;TAKEDA KUNIO;TANAKA KIICHIRO;ASADA KENJI;SATO JOJI
分类号
E21B3/00;E21B7/28;E21B7/30;E21D1/00;E21D1/03;(IPC1-7):E21B3/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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