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经营范围
发明名称
DOUBLE-ACTING HYDRAULIC VIBRATOR
摘要
申请公布号
SU597803(A1)
申请公布日期
1978.03.15
申请号
SU19731940534
申请日期
1973.07.02
申请人
BUSHUEV IVAN P,SU
发明人
BUSHUEV IVAN P,SU
分类号
(IPC1-7):E21B5/00;E21B1/06
主分类号
(IPC1-7):E21B5/00
代理机构
代理人
主权项
地址
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