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发明名称
ROCK BOLT CONSTRUCTING METHOD
摘要
申请公布号
JPS57197400(A)
申请公布日期
1982.12.03
申请号
JP19810080831
申请日期
1981.05.29
申请人
NIPPON KOKUYU TETSUDO;OKABE KK
发明人
NAGANO TOSHIMI;OOTSU KUNIHIRO
分类号
E21D21/00;E21D20/00;E21D20/02
主分类号
E21D21/00
代理机构
代理人
主权项
地址
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