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发明名称
摘要
申请公布号
JPH0444678(B2)
申请公布日期
1992.07.22
申请号
JP19870112608
申请日期
1987.05.11
申请人
HITACHI KENKI KK;SUGYAMA NOBORU
发明人
OGATA KOJIRO;MITSUYANAGI NAOKI;SUZUKI KENICHI;SUGYAMA NOBORU
分类号
E21D9/06
主分类号
E21D9/06
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