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发明名称
Kompletteringsredskap för lufttrycksborrmaskiner för borrning av spränghål i hård och frusen jord
摘要
申请公布号
FI29680(A)
申请公布日期
1958.05.10
申请号
FID29680
申请日期
申请人
AANAES GILMAR MATTIAS R.
发明人
AANAES GILMAR MATTIAS R.
分类号
E02F5/20;E21B17/00;(IPC1-7):E21B17/00
主分类号
E02F5/20
代理机构
代理人
主权项
地址
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