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发明名称
METHOD OF AND DEVICE FOR FOLLOWING COMBUSTION IN MINES AND THE LIKE
摘要
申请公布号
US3420575(A)
申请公布日期
1969.01.07
申请号
USD3420575
申请日期
1966.09.23
申请人
ROLF HUBNER
发明人
ROLF HUBNER
分类号
E21F17/103;E21F17/18;(IPC1-7):E21C41/00;G01N1/22;G08B21/00
主分类号
E21F17/103
代理机构
代理人
主权项
地址
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