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发明名称
Shaft-boring appliance
摘要
On shaft-boring appliances in hard coalmining, according to the invention there are provided uniformly electro-hydraulic drives, instead of conventional compressed-air drives, cable drives and capstan drives.
申请公布号
DE3641938(A1)
申请公布日期
1988.06.01
申请号
DE19863641938
申请日期
1986.12.09
申请人
GESTEINS- UND TIEFBAU GMBH
发明人
HOLEWIK,EKKEHARD
分类号
E21B7/02;E21D1/06
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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