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发明名称
PISTON FOR PERCUSSIVE MACHINES
摘要
申请公布号
SU1620624(A1)
申请公布日期
1991.01.15
申请号
SU19884449850
申请日期
1988.06.27
申请人
KRIVOROZNDZKIYI GORNO-RUDNUYI INDZTITUT
发明人
ARTAMONOVA DINA A,SU;FERVEYI OLEG I,SU
分类号
E21B1/24;B25D17/02
主分类号
E21B1/24
代理机构
代理人
主权项
地址
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