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发明名称
Металлическое сборное крепление для горизонтальных выработок
摘要
申请公布号
SU81146(A1)
申请公布日期
1948.11.30
申请号
SU19460348982
申请日期
1946.10.09
申请人
YARMAKOV N.I.
发明人
YARMAKOV N.I.
分类号
E21D11/14
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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