E21F 1/06

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Description

Class  E21F : SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS


Subclass 1/06: Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) Air ducts (suspension devices E21F 17/02) Duct connections (tube connections in general F16L)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
8925973 System and method for connecting two flexible containersJun 11, 13Jan 06, 15FLECOTEC AG
8721007 Highwall mining system, conveyor segment and method for providing such a mining systemJul 20, 04May 13, 14CATERPILLAR GLOBAL MINING HIGHWALL MINERS LLC, SHM-SYSTEMS N.V.,

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2017/0362,937 UNDERGROUND VENTILATION APPARATUS AND METHODJan 22, 16Dec 21, 17POLYVENT PTY LTD

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Patents Issued To Date - By Filing Year

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