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发明名称
VERFAHREN ZUR PERMEABILITAETSERHOEHUNG VON FILTERKRUSTEN
摘要
申请公布号
DD221791(A1)
申请公布日期
1985.05.02
申请号
DD19840259985
申请日期
1984.02.10
申请人
VEB BRAUNKOHLENBOHRUNGEN UND SCHACHTBAU WELZOW NL,DD
发明人
GOCKEL,GERT,DD;MORGNER,PETER,DD;ECKART,AXEL,DD;KAHNES,HARTMUT,DD
分类号
E21B43/00;(IPC1-7):E21B43/00
主分类号
E21B43/00
代理机构
代理人
主权项
地址
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