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发明名称
SHANK ROD FOR ROCK DRILL
摘要
申请公布号
JPS62236989(A)
申请公布日期
1987.10.17
申请号
JP19860080445
申请日期
1986.04.08
申请人
MITSUBISHI METAL CORP;TAISEI CORP
发明人
SHIGA HIDEMICHI;SAITO KIYOSHI;NAKAYAMA TOSHIAKI
分类号
E21B17/042
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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