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发明名称
AIR DISTRIBUTING DEVICE OF PNEUMATIC PERCUSSION MACHINE
摘要
申请公布号
SU1652534(A1)
申请公布日期
1991.05.30
申请号
SU19884625420
申请日期
1988.12.26
申请人
NI PK I PO DOBYCHE POLEZNYKH ISKOPAEMYKH OTKRYTYM SPOSOBOM
发明人
RYZHOV EVGENIJ I,SU;RYZHOV DANIIL E,SU
分类号
E21B1/30;B25D9/14
主分类号
E21B1/30
代理机构
代理人
主权项
地址
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