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发明名称
JET DRILLING METHOD USING ICY GRAIN AND DEVICE THEREOF
摘要
申请公布号
JPH03290586(A)
申请公布日期
1991.12.20
申请号
JP19900090083
申请日期
1990.04.06
申请人
YOSHIDA TETSUKOUSHIYO:KK
发明人
KAWADA MITSURU;MASUMOTO TERUO
分类号
E21B7/16
主分类号
E21B7/16
代理机构
代理人
主权项
地址
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