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发明名称
Система разработки поэтажным обрушением с применением гибкого перекрытия в виде металлической сетки с пространственным контуром
摘要
申请公布号
SU107165(A1)
申请公布日期
1956.11.30
申请号
SU19490381001
申请日期
1949.05.11
申请人
BOCHKAREV V.G.;SKOZOBOV V.I.
发明人
BOCHKAREV V.G.;SKOZOBOV V.I.
分类号
E21C41/22
主分类号
E21C41/22
代理机构
代理人
主权项
地址
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