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发明名称
Способ разработки пластов сланцев
摘要
申请公布号
SU71448(A1)
申请公布日期
1947.11.30
申请号
SU19460000247
申请日期
1946.12.14
申请人
BELOVOLOV V.T.
发明人
BELOVOLOV V.T.
分类号
E21C41/16
主分类号
E21C41/16
代理机构
代理人
主权项
地址
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