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发明名称
DRIVING DEVICE OF HYDRAULIC ACTUATION MEANS
摘要
申请公布号
JPH02217586(A)
申请公布日期
1990.08.30
申请号
JP19890190699
申请日期
1989.07.25
申请人
TAMPELLA AB:OY
发明人
RAUNO RAYARA;YUHA PIITSUPONEN
分类号
E21B19/08;E21B7/02;E21B15/04
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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