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发明名称
HYDRAULIC SUPPORT
摘要
申请公布号
PL338109(A1)
申请公布日期
2000.07.17
申请号
PL20000338109
申请日期
2000.01.26
申请人
STELMACH JOZEF
发明人
BANAS FELIKS;STELMACH JOZEF
分类号
E21B15/00;E21D23/08;(IPC1-7):E21B15/00
主分类号
E21B15/00
代理机构
代理人
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