E21F 1/08

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Description

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


Subclass 1/08: Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators (ventilators per seF04D)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
10435906 Flood protection for underground air ventsJul 14, 17Oct 08, 19Floodbreak, L.L.C.
10435909 Flood protection for underground air ventsJul 14, 17Oct 08, 19Floodbreak, L.L.C.
10435908 Flood protection for underground air ventsJul 14, 17Oct 08, 19Floodbreak, L.L.C.
10435907 Flood protection for underground air ventsJul 14, 17Oct 08, 19Floodbreak, L.L.C.
10435910 Flood protection for underground air ventsJul 14, 17Oct 08, 19Floodbreak, L.L.C.
10106945 Flood protection for underground air ventsOct 20, 17Oct 23, 18Floodbreak, L.L.C.
9752436 Method and system for tunnel ventilation in normal conditions and in conditions of fireJan 25, 13Sep 05, 17PAVETIC, JOSIP, PAVETIC, SVIBOR,
9664399 Ventilator and blade thereforSep 09, 13May 30, 17CSR BUILDING PRODUCTS LIMITED
9644854 Rotor ventilatorSep 09, 13May 09, 17CSR BUILDING PRODUCTS LIMITED

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2019/0201,827 Dry Filter with Enhanced Separation Output and Convenient DimensionsJan 03, 19Jul 04, 19Not available

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