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摘要
申请公布号
JP2918431(B2)
申请公布日期
1999.07.12
申请号
JP19930287105
申请日期
1993.11.16
申请人
RAITO KOGYO KK
发明人
KATO JUNZO;MORYA ISAMU;INOE JUNICHI;YAMAGUCHI MASATSUGU;YAMANE TOMOYUKI
分类号
E21B7/02;E21B15/00;E21B19/00;E21B19/08;(IPC1-7):E21C11/00
主分类号
E21B7/02
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代理人
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