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经营范围
发明名称
ELECTRIC HEATER
摘要
申请公布号
RU2003786(C1)
申请公布日期
1993.11.30
申请号
SU19904883203
申请日期
1990.11.15
申请人
BELYANSKIJ YURIJ NIKOLAEVICH;OLEJNIK PETR MIKHAJLOVICH;KONEV VALERIJ LEONIDOVICH
发明人
BELYANSKIJ YURIJ N;OLEJNIK PETR M;KONEV VALERIJ L
分类号
E21B43/24;(IPC1-7):E21B43/24
主分类号
E21B43/24
代理机构
代理人
主权项
地址
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