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发明名称
VERFAHREN ZUR BESEITIGUNG ERDVERLEGTER ROHRE FUER DIE BRAUNKOHLEENTWAESSERUNG
摘要
申请公布号
DD220877(A1)
申请公布日期
1985.04.10
申请号
DD19840259566
申请日期
1984.01.24
申请人
VEB CHEMIEKOMBINAT BITTERFELD,DD
发明人
WETZEL,KLAUS,DD;BRESSE,HERMANN,DD;ERDBEER,FRITZ,DD;EXNER,HANS-DIETER,DD;OTTO,ILSE,DD;RAST,HORST,DD;STRAUSS,BERND,DD
分类号
E21F16/00;(IPC1-7):E21F16/00
主分类号
E21F16/00
代理机构
代理人
主权项
地址
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