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发明名称
HYDRAULIC PIT PROP ARRANGEMENTS
摘要
申请公布号
US3606758(A)
申请公布日期
1971.09.21
申请号
USD3606758
申请日期
1969.02.12
申请人
BERGWERKSVERBAND GMBH.
发明人
WILHELM GOTZE
分类号
E21D23/00;(IPC1-7):E21D15/44
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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