| Patents for F04D 19 - Axial-flow pumps specially adapted for elastic fluids (3,780) |
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| 09/10/1997 | CN2262126Y 民用引风机 Civil induced draft fan |
| 09/09/1997 | US5664935 Vacuum pump |
| 09/02/1997 | US5662456 Friction vacuum pump with bearing support |
| 08/20/1997 | EP0789815A1 Friction-type vacuum pump with cooling system |
| 08/20/1997 | EP0656099B1 Process for monitoring the operative position of the rotary system of a vacuum pump, especially a turbo-molecular pump |
| 08/13/1997 | CN2259516Y Pipe type diagonal flow fan |
| 08/06/1997 | EP0787918A2 Magnetic bearing apparatus with radial position correcting electromagnet |
| 07/29/1997 | US5652473 Rotary assembly including in particular radial support means and a magnetic axial abutment |
| 07/08/1997 | US5645483 Smoke reducing power roof ventilator |
| 06/25/1997 | EP0780577A1 Improved multistage pumps and compressors |
| 06/25/1997 | EP0780553A1 Cooling device for a heat exchanger |
| 06/25/1997 | CN2256950Y 多功能水泵 Multifunctional Pump |
| 06/18/1997 | EP0779434A1 Improvements in vacuum pumps |
| 05/28/1997 | EP0775829A1 Turbomolecular vacuum pumps |
| 05/28/1997 | EP0775828A1 Turbomolecular vacuum pumps |
| 05/28/1997 | CN2254962Y Axial-flow blower with high pressure, high efficiency, low noise and large flow-rate |
| 05/27/1997 | US5632597 Thread groove type vacuum pump |
| 05/22/1997 | DE19543181A1 Multiple impeller for compressor |
| 05/22/1997 | DE19542956A1 Cooling system for vehicle internal combustion engine |
| 05/21/1997 | CN1150467A Cooling device for heat exchanger |
| 05/14/1997 | EP0773367A1 Turbo-molecular pump |
| 05/02/1997 | EP0770781A1 Turbomolecular vacuum pumps |
| 05/01/1997 | WO1997015760A1 Friction vacuum pump with intermediate inlet |
| 04/29/1997 | US5623893 Adjustable fan shroud arrangement |
| 04/16/1997 | EP0768467A1 Bearing unit |
| 04/09/1997 | EP0767307A1 Secondary pumping group |
| 04/08/1997 | US5618167 Vacuum pump apparatus having peltier elements for cooling the motor & bearing housing and heating the outer housing |
| 04/02/1997 | CN2251061Y Axial-flow ventilator of glass fibre reinforced plastics |
| 03/19/1997 | CN2249837Y Anti-fogging suspended suction blower |
| 03/18/1997 | US5611660 Compound vacuum pumps |
| 03/18/1997 | US5611659 Method and a device for reducing the gap between a static part and a movable part |
| 02/26/1997 | CN2248258Y Multi-section booster pumping machine |
| 02/20/1997 | DE19531937A1 Device for moving fluids in pipelines, e.g. for natural gas etc. |
| 02/19/1997 | CN2247732Y 屋顶轴流通风机 Roof axial fan |
| 02/19/1997 | CN1143167A Axial-flow fan and inclination changing blade axial-flow fan |
| 02/19/1997 | CN1143166A Vacuum pump |
| 01/22/1997 | EP0754864A1 Turbomachine |
| 01/22/1997 | EP0754275A1 System including a vacuum pump, measuring device and supply, control, operating and display equipment |
| 01/22/1997 | CN2245683Y Paired propeller fan |
| 01/21/1997 | US5595477 Vacuum pumping stand |
| 01/14/1997 | US5593283 Fan and fan drive and assembly thereof |
| 01/09/1997 | WO1997001040A1 Axial fan assembly |
| 01/08/1997 | EP0752534A1 Motor fan for cooling |
| 01/08/1997 | EP0646220B1 Gas friction vacuum pump |
| 01/07/1997 | US5590624 For use with construction machinery to reduce noise |
| 01/02/1997 | EP0751297A1 Turbo molecular pump |
| 12/25/1996 | CN2243560Y Opposite axial blower equipped with two stage impellers with different diameters |
| 12/19/1996 | DE19521393A1 Ventilator for a motor vehicle air conditioning unit |
| 12/18/1996 | EP0748940A1 Turbo molecular pump |
| 12/17/1996 | US5584669 Two-stage positive displacement pump |
| 12/11/1996 | EP0746689A1 Housing with recirculation control for use with banded axial-flow fans |
| 12/11/1996 | CN2242359Y indood ventilation fan |
| 12/10/1996 | US5582507 Automotive fan structure |
| 12/04/1996 | EP0745525A1 Vacuumpump |
| 11/26/1996 | US5577888 High efficiency, low-noise, axial fan assembly |
| 11/26/1996 | US5577883 Gas friction vacuum pump having a cooling system |
| 11/26/1996 | US5577881 High performance turbomolecular vacuum pumps |
| 11/26/1996 | CA1338735C Compact substantially coplanar axial-flow fan, drive motor, and housing with elongate innermost conduit |
| 11/12/1996 | US5574345 Power supply circuit for magnetic bearing system |
| 11/06/1996 | CN2239514Y Ventilation fan |
| 10/22/1996 | US5567200 Method and apparatus for circulating air |
| 10/17/1996 | WO1996032575A1 Cooling device for a heat exchanger |
| 10/16/1996 | CN1133403A Axial-flow blower with guiding in channel |
| 10/15/1996 | US5564907 Evacuating apparatus |
| 10/15/1996 | US5564897 Axial turbo-machine assembly with multiple guide vane ring sectors and a method of mounting thereof |
| 10/08/1996 | US5562405 Multistage axial flow pumps and compressors |
| 10/02/1996 | EP0735252A2 Engine cooling system |
| 10/02/1996 | DE19609308A1 Vacuum pump with spiral channel, for use with fusion reactors |
| 10/02/1996 | DE19512138A1 Axial-flow working or power machine |
| 10/01/1996 | US5561240 Leak detecting apparatus using compound turbo-molecular pump |
| 09/28/1996 | CA2155482A1 Portable electric fan heater |
| 09/18/1996 | EP0672222B1 Process and device for reducing the gap between a static part and a movable part |
| 09/11/1996 | EP0731278A1 Molecular vacuum pump with cooling gas device |
| 09/10/1996 | US5553998 Gas friction vacuum pump having at least three differently configured pump stages releasably connected together |
| 08/20/1996 | US5547338 Friction pump with magnetic bearings disposed in the impeller |
| 08/06/1996 | US5542825 Turbomolecular vacuum pump |
| 07/31/1996 | EP0723625A1 Active tip flow bypass in stator vane channel |
| 07/31/1996 | CN2232094Y Two stage liquid ring type vacuum pump |
| 07/24/1996 | EP0723080A1 Vacuum pumping system |
| 07/16/1996 | US5536148 Turbo vacuum pump |
| 07/03/1996 | EP0720272A1 Rotating device having an axial magnetical thrust bearing and radial levitating means |
| 06/27/1996 | WO1996019668A1 Pump drive |
| 06/26/1996 | CN2229984Y Electric fan giving cold or hot wind |
| 06/20/1996 | DE4444757A1 Wind-powered generator/blower arrangement |
| 06/19/1996 | CN2229562Y Textile axial-flow fanning machine |
| 06/18/1996 | US5528618 Photolytic iodine laser system with turbo-molecular blower |
| 06/12/1996 | EP0716241A1 Magnetic bearing apparatus |
| 06/04/1996 | US5522694 Venting device for magnetically supported vacuum pumps |
| 05/09/1996 | WO1996013667A1 Friction-type vacuum pump with cooling system |
| 05/02/1996 | DE4438812A1 Reibungsvakuumpumpe mit Kühlung Friction vacuum pump with cooling |
| 05/01/1996 | CA2145562A1 High performance vacuum/blower device |
| 04/30/1996 | US5511942 Axial mini ventilator with parabolic guide vanes |
| 04/24/1996 | EP0708249A1 Ducted axial fan |
| 04/18/1996 | WO1994012792A1 Process and device for reducing the gap between a static part and a movable part |
| 04/18/1996 | CA2150828A1 Method and a device for reducing the gap between a static and a movable part |
| 04/17/1996 | CN2224939Y Spraying propeller fan |
| 04/03/1996 | EP0704626A2 Fan mounting arrangement |
| 04/03/1996 | EP0704625A2 A fan |
| 03/27/1996 | EP0703367A2 Air conveying system for internal combustion engine radiators |
| 03/26/1996 | US5501583 Turbo vacuum pump |