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发明名称
SPOSOB DRAZENIA WYROBISKA KORYTARZOWEGO PRZECHODZACEGO PRZEZ POKLAD WEGLA SKLONNY DO SAMOZAPALENIA
摘要
申请公布号
PL100362(B1)
申请公布日期
1978.09.30
申请号
PL19760191984
申请日期
1976.08.23
申请人
发明人
分类号
E21D11/00;E21F5/00;(IPC1-7):E21D11/00
主分类号
E21D11/00
代理机构
代理人
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