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发明名称
BACK-FILLING METHOD OF DITCH
摘要
申请公布号
JPH09287125(A)
申请公布日期
1997.11.04
申请号
JP19960102740
申请日期
1996.04.24
申请人
NIPPON TELEGR & TELEPH CORP <NTT>;NIPPON DENWA SHISETSU KK
发明人
GOTO HIKARI;TANAKA ATSUO;OHARA YASUO;OSHIMA MUTSUMI
分类号
E02D3/12;E02B9/06;E02F5/10;F16L1/038;(IPC1-7):E02B9/06
主分类号
E02D3/12
代理机构
代理人
主权项
地址
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