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经营范围
发明名称
ROHRANKER
摘要
申请公布号
DD160886(A3)
申请公布日期
1984.06.13
申请号
DD19800219145
申请日期
1980.02.15
申请人
VISCH MINNO-GEOLOSCHKI INSTITUT,BG
发明人
NIKOLAEV,NIKOLAJ S.,BG;VELIKOV,VELIKO P.,BG
分类号
E02D5/80;E21D21/00;(IPC1-7):E21D21/00
主分类号
E02D5/80
代理机构
代理人
主权项
地址
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