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经营范围
发明名称
MOBILE DEMETHANATION STATION FOR MINING PURPOSES
摘要
申请公布号
PL113625(B2)
申请公布日期
1980.12.31
申请号
PL19780209240
申请日期
1978.08.25
申请人
发明人
分类号
E21F;E21F7/00;(IPC1-7):E21F7/00
主分类号
E21F
代理机构
代理人
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地址
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