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发明名称
Система разработки подэтажным обрушением
摘要
申请公布号
SU127217(A1)
申请公布日期
1959.11.30
申请号
SU19590632827
申请日期
1959.07.04
申请人
KUEVDA K.I.
发明人
KUEVDA K.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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