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发明名称
LEVEL INDICATOR
摘要
申请公布号
RU2062874(C1)
申请公布日期
1996.06.27
申请号
SU19925055431
申请日期
1992.07.08
申请人
AKTSIONERNOE OBSHCHESTVO "LENGIDROPROEKT"
发明人
GERTSYK MIKHAIL K;VOROPAJ SERGEJ A
分类号
E21B47/047;G01F23/00;(IPC1-7):E21B47/04
主分类号
E21B47/047
代理机构
代理人
主权项
地址
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