| Patents for F23J 11 - Devices for conducting smoke or fumes, e.g. flues (1,444) |
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| 07/01/1992 | CN2108849U Fume axhauster for laser high frequency electric operation |
| 07/01/1992 | CN2108848U Movable oil filtering and smoke exhausting device |
| 06/17/1992 | CN2107594U No-power smog exhausting device |
| 06/10/1992 | CN2106955U External rotor kitchen range hood fan |
| 05/27/1992 | CN2105612U Angle-adjustable smoke exhauster |
| 04/29/1992 | CN2102733U Outdoor activities laser smoke discharger |
| 04/01/1992 | CN1059843A Laser therapeutic instrument with smoke eliminated by itself |
| 03/10/1992 | CA1296952C Detection of exhaust gas spillage from naturally aspirated gas furnaces and naturally aspirated gas hot water heaters |
| 03/03/1992 | US5092226 Incinerator chimney stack valve mechanism |
| 02/26/1992 | CN2097349U Electronic controller for automatically removing carbon monoxide |
| 02/12/1992 | CN2096013U Expansion smoke exhauster of smoke exhausting fan |
| 01/22/1992 | CN2093972U Adjustable structure of oblique-stand cooking fume extractor |
| 01/15/1992 | CN2093329U Light oil-smoke exhauster |
| 01/15/1992 | CN2093311U Air door for oil-smoke exhauster |
| 01/01/1992 | CN2092032U Exhaust tube connecting structure for oil fume extractor |
| 12/25/1991 | CN2091407U Fume extractor |
| 12/24/1991 | US5074284 Fireplaces of the type with closed hearth and with visible combustion |
| 12/18/1991 | CN2090920U Integrated impeller for fume extractor |
| 12/18/1991 | CN2090919U Hood fixing structure for fume extractor |
| 12/04/1991 | CN2090008U Multifunction exhausting device |
| 11/20/1991 | CN2089125U Non-return sealing cover for domestic rang hood fan |
| 09/26/1991 | DE4009072A1 Steel chimney fitted with silencer - has under chamber mounted with axis horizontal |
| 09/25/1991 | EP0448486A1 Fireplace with closed fire and with apparent combustion |
| 09/25/1991 | CN2085477U Household natural soot exhauster |
| 09/24/1991 | CA2038990A1 Seethrough closedhearth type fire place |
| 09/18/1991 | CN2085027U Oil fume drain machine with frame protecting |
| 09/11/1991 | CN2084561U Clean oil-free oil and smoke exhauster |
| 09/04/1991 | CN1054305A Smoke prevention and dust control apparatus for flame-reverse kiln burning coal |
| 06/12/1991 | CN2078846U Oil-fume suction cap |
| 05/08/1991 | CN1051239A Manufacturing method for smooth inorganic fibreglass epoxy stove-pipe |
| 05/08/1991 | CN1051238A Multi-functional energy-saving stove |
| 05/08/1991 | CN1051122A Energy-saving pot |
| 04/10/1991 | CN2074864U Smoke-eliminating oil-removing device |
| 04/03/1991 | CN2074216U Serial filter unit of fume |
| 03/19/1991 | US5000161 Smokestack having reduced IR emission |
| 03/13/1991 | CN2073087U Oil spatter-proof device of soot extractor |
| 03/13/1991 | CN2073086U Movable synergy device of soot extractor |
| 03/06/1991 | CN2072648U Combined fume extractor |
| 03/06/1991 | CN2072647U Kitchen fume extractor cooperated with scavenging fan |
| 02/19/1991 | US4993314 Convectively cooled hot gas exhaust structure to reduce infrared radiation |
| 02/06/1991 | CN2070872U Range hood fan |
| 12/26/1990 | CN2068192U Simple fume extractor for -kitchen |
| 12/26/1990 | CN2068191U Magnetic oil-absorbing cup |
| 12/19/1990 | CN2067606U Dry type duster with high efficiency and low resistance |
| 11/07/1990 | CN2065282U Fire grate for brequet-fired heating furnace |
| 10/17/1990 | CN2064023U Refractory, anti-wet and corrosion-proof heating stovepipe |
| 10/03/1990 | CN1045857A Stovepipe of composite materials |
| 09/18/1990 | CA1274138A1 Catalytic space heater |
| 08/22/1990 | CN2060845U Lampblack exhauster |
| 07/19/1990 | DE3901081A1 Installation for carrying away flue gases |
| 05/09/1990 | CN2056964U Check valve for oil fume or smoke extractor |
| 04/24/1990 | US4919170 Flow duct for the flue gas of a flue gas-cleaning plant |
| 12/13/1989 | CN2049314U Heating stove chimney pipe made of used beverage metal cans |
| 09/27/1989 | CN2045060U Pottery stovepipe |
| 09/20/1989 | EP0332695A1 Catalytic space heater |
| 08/16/1989 | EP0328308A1 Flue system |
| 07/27/1989 | DE3839740A1 Air/waste-gas ducting for fuel-fired heat sources |
| 07/06/1989 | DE3844100A1 Combustion-air and waste-gas duct of a burner-heated appliance |
| 07/05/1989 | CN2040584U Flue |
| 06/22/1989 | DE3840979A1 Waste-gas duct for burner-heated appliances |
| 04/18/1989 | US4821473 To reduce chimney fires and handle smoke |
| 04/06/1989 | WO1989003005A1 Catalytic space heater |
| 02/23/1989 | DE3727196A1 Duct branching |
| 02/15/1989 | EP0303047A2 Exhaust gas flue for an exhaust gas purification plant |
| 02/01/1989 | CN2031876U Smoke exhauster with functions of anti-backflow and combustion-supporting |
| 12/07/1988 | CN88202323U Air purifying device for kitchen |
| 11/22/1988 | US4785722 Fume hood with step baffles |
| 11/01/1988 | CA1243886A1 Gas-fired heater vent system |
| 09/06/1988 | US4768444 Common vent device for positive vent pressure and draft hood equipped gas appliances |
| 08/30/1988 | US4766877 Catalytic space heater |
| 08/16/1988 | CA1240666A1 Heat generator |
| 07/20/1988 | EP0274903A2 Burner for low profile impingement oven |
| 07/12/1988 | CA1239084A1 Portable gas heater |
| 06/29/1988 | CN87215990U Pneumatic domestic combustion-supporting apparatus |
| 06/28/1988 | US4753215 Burner for low profile inpingement oven |
| 06/28/1988 | CA1238541A1 Exhaust venting apparatus |
| 06/01/1988 | CN87201997U Chimney |
| 05/03/1988 | CA1235970A1 Flue pipe connection |
| 04/27/1988 | CN87202092U Household smoke hood and stovepipe ventilator |
| 01/06/1988 | CN87202262U Funnel pipe dust remover |
| 01/06/1988 | CN87202203U Back and forth pullable smoke discharging hood |
| 12/26/1987 | CN87201885U Burning type reverberatory furnace |
| 12/09/1987 | EP0248327A2 Method of making an air-, waste gas chimney for gas firing devices in buildings |
| 11/25/1987 | CN87208458U Fixation type wind-entering potection chimney with pressure-reduction outlet |
| 11/25/1987 | CN87202458U Multifunction exhausting-smoke device for kitchen |
| 11/24/1987 | US4708722 Air washer and heat exchanger |
| 10/27/1987 | US4702179 Controlled coal burning and heat collecting method and apparatus |
| 10/13/1987 | US4699317 Heat exchanger flue |
| 10/07/1987 | CN86209899U Wind sucker for household smoke pipe |
| 09/30/1987 | CN86205637U Exhaust combustion-supporting device |
| 04/16/1987 | DE3623577C1 Process for producing an air/waste gas chimney for gas fireplaces in old buildings |
| 04/07/1987 | CA1220091A1 Furnace by combustion of pulverized coal |
| 03/24/1987 | US4651923 Heat extractor |
| 07/23/1986 | CN85203335U Smoke-exhausting unit for chimney |
| 06/10/1986 | CN85101292A Discharge of power plant exhaust-gases by chimney inside a natural draught cooling tower |
| 05/07/1986 | CN85203387U Protecting wind and exhausting smoke device for domestic gas oven or fuel oven |
| 04/16/1986 | EP0177498A1 Method and apparatus for improving the operation of a heat generator |
| 04/08/1986 | US4580548 Gas-fired heater vent system |
| 11/07/1985 | WO1985004946A1 Method and apparatus for improving the operation of a heat generator |
| 10/08/1985 | CA1194671A1 Chimney flue with ventilator means |