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发明名称
DRILLING APPARATUS
摘要
申请公布号
JPS58176391(A)
申请公布日期
1983.10.15
申请号
JP19830027091
申请日期
1983.02.22
申请人
TSURUKUMENSUKII NAUCHINOOISUSUREDOBATERUSUKII GEOROGORAZUBEDOCHINII INST
发明人
BAIDO AMIRUDOZANOBITSUCHI KERIMOFU;ROBAATO AJIZOBITSUCHI ISUMAIROFU
分类号
E21B21/00;E21B3/02;E21B7/02;E21B19/00;E21B21/02;E21B21/12
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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