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发明名称
NOTCH-FORMING DEVICE OF BLASTING HOLE
摘要
申请公布号
JPH08144684(A)
申请公布日期
1996.06.04
申请号
JP19940309612
申请日期
1994.11.18
申请人
NIPPON STEEL CORP;OKUMURA CORP
发明人
MURAYAMA TSUNEMI;HAYASHI HIRONOBU;SASAKI MITSUO;FURUNAGA TATSUHIRO;YOSHIKAWA KENJI;ENDO YOSHIHIKO
分类号
F42D3/04;C21B7/00;E21B1/00;E21C35/18;(IPC1-7):E21C35/18
主分类号
F42D3/04
代理机构
代理人
主权项
地址
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