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发明名称
HYDRAULIC MOTOR OPERATOR IN PARTICULAR FOR SELF-ADVANCING SUPPORTS
摘要
申请公布号
PL139105(B1)
申请公布日期
1986.12.31
申请号
PL19830242242
申请日期
1983.05.25
申请人
发明人
分类号
E21D;E21D15/44;E21D23/04;F15C;(IPC1-7):E21D15/44
主分类号
E21D
代理机构
代理人
主权项
地址
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