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发明名称
Improvements in electrodes for use in systems for the underground gasification of coal
摘要
申请公布号
GB755669(A)
申请公布日期
1956.08.22
申请号
GB19540010456
申请日期
1954.04.09
申请人
THE MINISTER OF FUEL AND POWER
发明人
HART GEOFFREY
分类号
E21B43/24
主分类号
E21B43/24
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