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经营范围
发明名称
BOHRMEISSEL
摘要
申请公布号
DD282947(A5)
申请公布日期
1990.09.26
申请号
DD19890328340
申请日期
1989.05.08
申请人
SDAG WISMUT,DD
发明人
SCHISCHKOW,JURI,SU;ALBRECHT,ERWIN,DD;SEIFERT,HEINZ,DD;BLINOW,ALEXANDER,SU;KALASCHNIKOW,SERGEJ,SU
分类号
E21B10/00;(IPC1-7):E21B10/00
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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