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发明名称
METHOD AND APPARATUS FOR FORMING A NICHE
摘要
申请公布号
SU964096(A1)
申请公布日期
1982.10.07
申请号
SU19792862257
申请日期
1979.12.28
申请人
VNI GORNO-METALLURGICHESKIJ I TSVETNYKH METALLOV
发明人
VASILKOV VIKTOR I,SU;ANANEV ARKADIJ D,SU;VASILKOVA RAISA E,SU;PAVLOV VITALIJ D,SU
分类号
E21B7/00;E21B3/00;E21B19/00;(IPC1-7):E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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