发明名称 MINE VENTILATION PANEL SYSTEM
摘要 <p>A panel system for making mine ventilation structures. The panel system comprises a plurality of elongate metal panels having flanges along sides thereof configured for overlapping one another when the panels are placed in side-by-side relation. When the panels are secured together they form a unitary load-bearing structure. Related methods and equipment for installing the panels are also disclosed.</p>
申请公布号 CA2804825(C) 申请公布日期 2015.05.12
申请号 CA20042804825 申请日期 2004.11.09
申请人 KENNEDY, WILLIAM R.;KENNEDY, JOHN M. 发明人 KENNEDY, WILLIAM R.;KENNEDY, JOHN M.
分类号 E21F1/14;E21D9/14;E21F17/103 主分类号 E21F1/14
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