| Patents for F24H 1 - Water heaters having heat generating means, e.g. boiler, flow-heater, water-storage heater (28,567) |
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| 07/04/1990 | CN2058972U Honeycomb briquet for water heating |
| 07/04/1990 | CN2058971U Gas firing stove for warming |
| 07/04/1990 | CN2058970U Exhaust-heated water heater from gas range |
| 07/04/1990 | CN2058969U Temp. increasing device for gas-firing water heater |
| 07/04/1990 | CN1043559A Circulator for heating or cooling liquid |
| 07/03/1990 | US4938204 Water heater or boiler with improved thermal efficiency |
| 07/03/1990 | US4938172 Supplement system for transferring heat from a furnace exhaust stack to a hot water tank |
| 07/03/1990 | CA1271188A1 Tube arrangement for heat exchanger |
| 07/03/1990 | CA1271091A1 Vertical furnace |
| 06/28/1990 | WO1990007084A1 Square multi-pipe once-through boiler |
| 06/27/1990 | CN2058733U Water heater |
| 06/27/1990 | CN2058732U Multi-purpose bathing apparatus |
| 06/26/1990 | US4936260 Boiler or water heater with insulated water tank |
| 06/21/1990 | DE3842463A1 Heating device (heater, radiator) |
| 06/20/1990 | CN2058471U Domestic water-heating stove |
| 06/20/1990 | CN2058320U Domestic gas shower |
| 06/20/1990 | CN1008478B Boiler, particularly for coal firing |
| 06/20/1990 | CN1008477B Fluid-heating equipment in storage tank of transport pipe |
| 06/19/1990 | US4935603 Hot water supply system |
| 06/19/1990 | US4934924 Liquid fuel burner |
| 06/19/1990 | US4934032 Method of water heater construction |
| 06/13/1990 | EP0373027A1 Condensing boiler for heating with a heat-conveying liquid |
| 06/13/1990 | EP0316315B1 Apparatus for tempering fluid masses |
| 06/13/1990 | DE3841782A1 Domestic-water continuous-flow heater intended as an additional apparatus in particular for gas-fired hot-water closed circuit heating systems |
| 06/13/1990 | CN2058241U Multi-energy resources heat exchanger |
| 06/13/1990 | CN2058240U Hot water boiler wiht thermal pipes |
| 06/13/1990 | CN2058239U Industrial frequency induction water boiler |
| 06/12/1990 | CA1270289A1 Electrode boiler for producing steam or hot water |
| 06/12/1990 | CA1270288A1 Electrode boiler for producing steam or hot water |
| 06/07/1990 | DE3840437A1 Multi-component catalyst for heating boilers |
| 06/06/1990 | CN2058001U Verticle double-layer fire grate back-burning tea/bath boiler of removing smoke and saving coal |
| 06/06/1990 | CN2058000U Automatic pressure drinker |
| 06/06/1990 | CN2057999U Directly heating steam type quick heater |
| 06/06/1990 | CN2057998U Tea stove |
| 06/06/1990 | CN2057997U Hot/cold water apparatus of burning fuel gas |
| 06/06/1990 | CN2057996U Multipurpose internal heating and clutchable water heater |
| 05/30/1990 | EP0370504A2 Heating plant |
| 05/30/1990 | CN2057735U High-efficient non-pressure heating boiler |
| 05/30/1990 | CN2057734U Internal cycle device of kettle shell type hot water boiler |
| 05/30/1990 | CN2057733U Natural gas volume type heating (boiling) water unit |
| 05/30/1990 | CN2057732U Smoke-canceling energy-saving tea-water stove |
| 05/30/1990 | CN2057731U Fully-automatic domestic water-boiling unit |
| 05/30/1990 | CN2057730U Multi-face heating energy-saving water-heating furnace |
| 05/30/1990 | CN2057729U Honeycomb briquet stove dish type energy-saving water-heating unit |
| 05/29/1990 | USRE33222 Pressure transfer fluid heater |
| 05/23/1990 | CN2057502U Energy saving boiler |
| 05/23/1990 | CN2057501U Automatic pressure sensing controlled boiler |
| 05/23/1990 | CN2057500U General high-efficiency energy-saving water-storage type water heater |
| 05/22/1990 | US4927060 Apparatus with steam trap for heating and dispensing hot liquids |
| 05/22/1990 | US4926842 Immersion tube heater treater improved immersion tube heater treater |
| 05/22/1990 | US4926798 Process for pulse combustion |
| 05/22/1990 | US4926797 Wood burning hot water furnace |
| 05/17/1990 | DE3838507A1 Combined heating boiler |
| 05/15/1990 | US4925093 Forced draft direct vent system for a water heater |
| 05/09/1990 | CN2056985U Multipurpose shower with coil pipe in water jecket and top cap |
| 05/09/1990 | CN2056984U Hot-water heating stove burning both lump coal and honeycomb briquet |
| 05/09/1990 | CN2056983U Full-automatic electrothermic shower |
| 05/09/1990 | CN2056982U Fast energy-saving electric heater of water |
| 05/09/1990 | CN1042002A Non-pressure opened type hot water boiler and heating device |
| 05/08/1990 | US4924069 Hot water supply for tubs |
| 05/08/1990 | US4923969 Preparation of 99m Tc radiopharmaceuticals |
| 05/08/1990 | US4923393 Fuel fired burner |
| 05/03/1990 | WO1990004910A1 Microwave pipe warmer |
| 05/03/1990 | WO1990004746A1 Solar water heater |
| 05/03/1990 | DE3935940A1 Heat exchanger for continuous-flow heater - has heater coils in metal pipes insulated on inside |
| 05/03/1990 | DE3837198A1 Electric heater for thermal treatment of single- or multi-phase fluids, with a pipe directly heated by electric resistance heating |
| 05/02/1990 | EP0365640A1 Low-temperature heating boiler. |
| 05/02/1990 | CN2056738U Household water heater |
| 05/02/1990 | CN2056737U Insulating water damping electric water heater |
| 05/01/1990 | US4921166 Hot water circulating system |
| 05/01/1990 | US4920925 Boiler with cyclonic combustion |
| 05/01/1990 | CA1268385A1 Diesel fuel preheating apparatus |
| 05/01/1990 | CA1268384A1 Air preheater for a compact boiler |
| 04/25/1990 | EP0151151B2 Method for obtaining a water-heater body from plastic material based on fibre-reinforced polyester |
| 04/25/1990 | CN2056497U Domestic energy save hot water stove |
| 04/25/1990 | CA2001520A1 Microwave pipe warmer |
| 04/24/1990 | US4919085 Pulse combustion apparatus |
| 04/24/1990 | CA1268087A1 Heating process for liquids at different levels of temperature and installation for carrying out this process |
| 04/24/1990 | CA1268085A1 Multi-purpose heater for ice fishing |
| 04/19/1990 | WO1990004139A1 Heating apparatus with a heat exchanger |
| 04/18/1990 | EP0363708A2 Heating apparatus for agents fluids |
| 04/18/1990 | CN2056224U New-type high-efficiency hot water heating boiler |
| 04/18/1990 | CN2056223U High-efficiency combustion-supporting water heater |
| 04/18/1990 | CN2056057U Simple-structure warm bathroom for household |
| 04/17/1990 | CA1267818A1 High efficiency water heater |
| 04/12/1990 | DE3903649C1 Electric flow heater for liquids |
| 04/11/1990 | EP0362263A1 A container or a tank. |
| 04/11/1990 | CN2055917U Domestic boiler for use of soft coal block |
| 04/10/1990 | WO1990011473A1 Heating device |
| 04/10/1990 | US4916427 Electronic electrothermal conversion material, its products and method for production thereof |
| 04/10/1990 | US4915296 Hot water circulating system |
| 04/04/1990 | EP0361958A1 Ignition mechanism for an instantly heating container |
| 04/04/1990 | CN2055577U Hot-water boiler with detachable-chamber |
| 04/04/1990 | CN2055576U Series of energy-saving heater with noise-silencer |
| 04/03/1990 | US4913854 Water warming method and apparatus therefor |
| 04/03/1990 | CA1267333A1 Steam generator |
| 03/29/1990 | DE3832322A1 Heating boiler |
| 03/28/1990 | EP0360090A1 Gas-fired boiler with an atmospherical burner |
| 03/28/1990 | CN2055236U Smoke eliminating and power saving dual inner container ordinary pressure boiler |
| 03/28/1990 | CN2055235U Full-automatic power saving healthy cold and hot boiled water supply |