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发明名称
Device having adjustable knives for forming tunnels in soil
摘要
申请公布号
US3332721(A)
申请公布日期
1967.07.25
申请号
US19640383205
申请日期
1964.07.16
申请人
NAUCHNO-ISSLEDOVATELSKY INSTITUTE OSNOVANY I PODZEMNYKH SOOROOZHENY
发明人
SAMOILOV VLADIMIR PAVLOVICH;VASILJEV NIKOLAI VLADIMIROVICH;VASILENKO EVSTAFY ANDREEVICH;VINCH GEORGY VLADIMIROVICH;ANTONOV IGOR PETROVICH
分类号
E21D9/08
主分类号
E21D9/08
代理机构
代理人
主权项
地址
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