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发明名称
SPOSOB ZWIEKSZENIA WYDOBYCIA SIARKI PRZY METODZIE PODZIEMNEGO WYTAPIANIA
摘要
申请公布号
PL105739(B1)
申请公布日期
1979.10.31
申请号
PL19750181532
申请日期
1975.06.25
申请人
发明人
分类号
E21B43/28;(IPC1-7):E21B43/28
主分类号
E21B43/28
代理机构
代理人
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地址
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