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发明名称
LIFTKOPF ZUR AUFNAHME EINES MIT STEIGROHREN VERSEHENEN BOHRGESTAENGES
摘要
申请公布号
DD284937(A5)
申请公布日期
1990.11.28
申请号
DD19890329434
申请日期
1989.06.09
申请人
VEB ZENTRALES REPARATUR- U. AUSRUESTUNGSWERK,DD
发明人
SIMON,HANS-JOACHIM,DD;WAGNER,ROLF-MICHAEL,DD
分类号
E21B19/00;(IPC1-7):E21B19/00
主分类号
E21B19/00
代理机构
代理人
主权项
地址
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