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发明名称
SUBMERSIBLE PNEUMATIC PERCUSSIVE DEVICE
摘要
申请公布号
SU939754(A1)
申请公布日期
1982.06.30
申请号
SU19802978925
申请日期
1980.08.25
申请人
INST GORNOGO DELA SO AN SSSR
发明人
BELOUSOV ANATOLIJ V,SU
分类号
E21B4/14;(IPC1-7):E21C3/24
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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