E21F 1/14

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2022/0065,109 EXPANDABLE MINE STOPPING PANELAug 25, 21Mar 03, 22Not available
2021/0207,481 SPLIT AIR CABIN VENTILATION SYSTEM FOR CONSTRUCTION OF TUNNEL INCLINED SHAFT AND VENTILATION METHOD USING SAMEMar 25, 21Jul 08, 21Not available
2017/0191,365 Overcast System for Mine VentilationDec 30, 16Jul 06, 17FCI HOLDINGS DELAWARE, INC.
2016/0348,506 ADJUSTABLE MINE VENTILATION SYSTEM AND METHODDec 28, 15Dec 01, 16GMS MINE REPAIR AND MAINTENANCE, INC.
2016/0281,503 MINE STOPPING PANEL WITH END CAPS AND LOUVER CONNECTIONSJun 08, 16Sep 29, 16JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC.
2015/0315,911 MINE VENTILATION STRUCTURE AND A DECK PANEL FOR SUCH A STRUCTUREApr 14, 15Nov 05, 15JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC.
2015/0011,147 INFLATABLE VENTILATION LIFE CURTAINJun 30, 14Jan 08, 15HEINTZMANN CORPORATION
2014/0349,562 Change Over Station and MethodMay 13, 14Nov 27, 14STRATA PRODUCTS WORLDWIDE, LLC
2014/0329,453 BLOWING CURTAIN FACE VENTILATION SYSTEM FOR EXTENDED CUT MINING USING PASSIVE REGULATORMay 01, 14Nov 06, 14UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION
2014/0314,490 PUMPABLE MINE VENTILATION STRUCTUREFeb 07, 14Oct 23, 14ABC INDUSTRIES, INC., HEINTZMANN CORPORATION,
2014/0273,791 MINE AIRLOCK SYSTEM AND METHODMar 15, 13Sep 18, 14KRIST DOOR SERVICE, INC.
2014/0057,544 MINE STOPPING PANEL WITH END CAPS AND LOUVER CONNECTIONSAug 19, 13Feb 27, 14JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC., KENNEDY METAL PRODUCTS & BUILDINGS, INC.,
2010/0144,264 UNDERGROUND MINE VENTILATION CURTAIN OR BARRIERJul 17, 08Jun 10, 10Not available
2007/0218,825 INFLATABLE VENTILATION LIFE CURTAINMar 15, 07Sep 20, 07HEINTZMANN CORPORATION
2006/0172,683 Air Deflecting mine ventilation structureJan 14, 05Aug 03, 06JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC., KENNEDY METAL PRODUCTS & BUILDINGS, INC.,
2005/0101,243 Mine ventilation panel systemSep 27, 04May 12, 05JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC., KENNEDY METAL PRODUCTS & BUILDINGS, INC.,
2004/0266,329 Mine door system including an air pressure relief doorJun 27, 03Dec 30, 04JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC., KENNEDY METAL PRODUCTS & BUILDINGS, INC.,
2004/0175,238 Permanent stopping form and method of installing sameJan 06, 04Sep 09, 04JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC.
2004/0067,730 Mine ventilationOct 07, 02Apr 08, 04JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC.
2003/0147,706 Mine stopping and braces thereforJan 29, 03Aug 07, 03JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC.

Showing 1 to 20 of 23 results