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发明名称
METHOD OF DRILLING HOLES BY IMPACT PULSES
摘要
申请公布号
SU1348478(A1)
申请公布日期
1987.10.30
申请号
SU19843784169
申请日期
1984.03.19
申请人
VARENIK VALERIJ A,SU;ZHDANKOV VLADIMIR F,SU;CHUCHVICH MIKHAIL N,SU
发明人
VARENIK VALERIJ A,SU;ZHDANKOV VLADIMIR F,SU;CHUCHVICH MIKHAIL N,SU
分类号
E21B4/06
主分类号
E21B4/06
代理机构
代理人
主权项
地址
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