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发明名称
DUST-TRAPPING UNIT FOR DRY DRILLING OF BOREHOLES
摘要
申请公布号
SU724713(A1)
申请公布日期
1980.03.30
申请号
SU19782674165
申请日期
1978.10.16
申请人
ALMAEV RUSTAM B,SU;MAJOROV ANATOLIJ N,SU;ORYVKOV ARGENTIN A,SU;SADCHIKOV VALERIJ K,SU;SHILOV PAVEL D,SU
发明人
ALMAEV RUSTAM B,SU;MAJOROV ANATOLIJ N,SU;ORYVKOV ARGENTIN A,SU;SADCHIKOV VALERIJ K,SU;SHILOV PAVEL D,SU
分类号
E21B21/07;(IPC1-7):E21C7/00
主分类号
E21B21/07
代理机构
代理人
主权项
地址
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