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发明名称
METHOD AND DEVICE FOR DISCHARGING SLIME FROM DRILL
摘要
申请公布号
JPS5231902(A)
申请公布日期
1977.03.10
申请号
JP19750108087
申请日期
1975.09.08
申请人
NIPPON TELEGRAPH & TELEPHONE
发明人
IWATA YOSHIHITO;OBATA HIROKI;YAMADA SATOO
分类号
B25D17/18
主分类号
B25D17/18
代理机构
代理人
主权项
地址
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