| Patents for F04D 25 - Pumping installations or systems specially adapted for elastic fluids (17,127) |
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| 04/25/1989 | US4823744 Rotation speed control device for a hydraulically operated cooling fan of an internal combustion engine |
| 04/13/1989 | DE3730671A1 Vorrichtung zur unterseeischen foerderung von erdoel und erdgas Apparatus for subsea production of oil and natural gas |
| 04/12/1989 | CN2035813U Guiding-grid wind-driven governing device of leaf-running fan |
| 04/06/1989 | DE3802336C1 Fan arrangement for battery and solar operation |
| 04/05/1989 | EP0310391A2 Axial flow fan |
| 04/05/1989 | CN2035405U Wind-control turnable fan |
| 04/05/1989 | CN2035404U Multi-function mechanical automatic fan |
| 03/29/1989 | CN2035011U Domestic air interchanger |
| 03/29/1989 | CN2035010U Mechanical-type automatic electric fan |
| 03/29/1989 | CN2035009U Wind-powered roof aspirator |
| 03/29/1989 | CN1032069A Undersea conveying apparatus of crude oil and natural gas |
| 03/23/1989 | WO1989002536A1 Mechanically driven charger for internal combustion engines |
| 03/23/1989 | WO1989002535A1 Mechanical drive of the charging blower of internal combustion engines |
| 03/23/1989 | WO1989002521A1 Mechanical drive for the charging blower of internal combustion engines |
| 03/23/1989 | DE3829699A1 Mechanical drive for a supercharger of an internal combustion engine |
| 03/23/1989 | DE3829697A1 Mechanical drive for a supercharger of an internal combustion engine |
| 03/22/1989 | CN2034633U Wind speed control device for electric fan |
| 03/22/1989 | CN2034632U Electric fan with capability of stepless selection of rotating amplitude |
| 03/22/1989 | CN2034631U Omnibearing pendent electric fan with shaking head |
| 03/15/1989 | CN2034206U Oscillating electric fan without gear wheel |
| 03/08/1989 | EP0305700A2 Compressor unit |
| 03/08/1989 | EP0305568A1 Rotary fans |
| 03/08/1989 | EP0305376A1 Centrifugal superchargers |
| 03/08/1989 | CN2033866U Circumference electric fan |
| 03/08/1989 | CN2033865U Electric fan for tour |
| 03/07/1989 | US4810175 Hermetic motor bearing assembly |
| 03/07/1989 | US4810173 Firebooster |
| 03/01/1989 | EP0304638A1 Ventilator |
| 03/01/1989 | CN1031410A Encased fan with motor |
| 02/28/1989 | US4808071 Ceiling fan |
| 02/23/1989 | WO1989001567A1 Turbo-charging apparatus for internal combustion engines |
| 02/22/1989 | EP0303641A1 Transport ventilator. |
| 02/22/1989 | CN2033069U Domestic adsorption exhaust fan |
| 02/15/1989 | CN2032661U Portable electric fan |
| 02/08/1989 | CN2032274U Temp.-controlling stepless speed governor |
| 02/08/1989 | CN2032273U Automatically-controlling and adjustable multifunctional scavenging fan |
| 02/08/1989 | CN2032272U Omnibearing electric fan |
| 02/08/1989 | CN2032271U Electric fan with stepless angle-regulating |
| 02/08/1989 | CN2032270U Glass fiber reinforcement plastic draught fan with high efficiency and strength |
| 02/01/1989 | CN2031855U Fan for motor |
| 02/01/1989 | CN2031854U Wind control type adjustable-speed energy-saving electric fan |
| 02/01/1989 | CN2031853U High efficiency low-noise centrifugal fan |
| 02/01/1989 | CN2031852U Wing type energy-saving double-suction centrifugal fan |
| 01/31/1989 | US4801252 Slide bearing unit for small size fan |
| 01/25/1989 | CN2031463U 电风扇 Fan |
| 01/18/1989 | CN2031044U 电风扇 Fan |
| 01/11/1989 | CN2030668U Whirlwind ceiling fan |
| 01/11/1989 | CN2030667U 带灯吊扇 Ceiling fans with light |
| 01/11/1989 | CN2030666U Ceiling fan with driving belt deceleration device |
| 01/11/1989 | CN2030665U Space wind ceiling fan |
| 01/10/1989 | US4797600 Magnetic drive control system for a multiple cooling fan installation |
| 01/10/1989 | US4797072 Portable electric blower |
| 01/04/1989 | EP0297691A1 Motor and compressor combination |
| 01/04/1989 | EP0297672A2 Turbo-compressor having air cooled bearing |
| 12/21/1988 | EP0295455A2 Portable electric blower |
| 12/21/1988 | CN88212106U Multipurpose combination rerersing fan |
| 12/20/1988 | US4792286 Blower-vacuum apparatus |
| 12/14/1988 | CN88202476U Multifunction remote control electrical fan |
| 12/14/1988 | CN87215615U Wind temperature-reducing electric fan |
| 12/07/1988 | CN87107386A Cylindrical fan of multiblade |
| 12/01/1988 | DE3717499A1 Double-cone roller drive |
| 11/30/1988 | EP0293277A2 Fan with motor cooling and enhancement |
| 11/30/1988 | CN88200994U Exhaust fan with self-locking and self-releasing device |
| 11/29/1988 | US4787818 Centrifugal blower assembly |
| 11/23/1988 | CN88200743U Draught fan especially for high-temp. fume-removing and fire-fighting |
| 11/16/1988 | CN87213816U Desk type electric fan with artistic ceramic supporting seat |
| 11/16/1988 | CN87204566U Helm type head-swinging device for fan |
| 11/16/1988 | CN87103252A Sequentially scintillating light-ring electric fan |
| 11/09/1988 | CN87215528U Stepless regulating mechanism for head-turning angle of electric fan |
| 11/01/1988 | US4782213 Ceiling fan electrically heating environmental air |
| 10/27/1988 | DE3711720A1 Ventilator |
| 10/26/1988 | CN87216977U Electric-fan back cover with a speed-adjusting switch |
| 10/25/1988 | US4780056 For supplying air to a spray paint system |
| 10/18/1988 | US4777870 Adjustable air sweep mechanism for a room air conditioner |
| 10/12/1988 | CN87216047U Electronic pulse controller for oscillating electric fan |
| 10/12/1988 | CN87205873U Axial flow fan driven by linear motor |
| 10/12/1988 | CN87201418U Electric fan with complex oscillation |
| 10/05/1988 | EP0284709A2 Reversible fan |
| 10/05/1988 | CN87215527U Angle control device for electric fan |
| 10/05/1988 | CN87212551U Adjustable electrical fan |
| 10/05/1988 | CN87210158U Mechanical pause starting electrical fan |
| 10/05/1988 | CN87208868U Disk motor electric fan |
| 09/28/1988 | CN87206923U Electric fan simulating natural wind |
| 09/27/1988 | US4773828 Blower |
| 09/22/1988 | DE3708040A1 Motor fan impeller with conical air flow |
| 09/21/1988 | EP0283287A2 Pump |
| 09/21/1988 | EP0283081A1 Ceiling fan |
| 09/21/1988 | CN88101264A 吊扇 Ceiling fan |
| 09/21/1988 | CN87207888U Explosion-proof pendent fan |
| 09/15/1988 | DE3744685A1 Electric motor having a connecting housing, connecting box and plug strip |
| 09/13/1988 | US4770606 Centrifugal compressor |
| 09/07/1988 | CN87205543U Electric fan |
| 09/06/1988 | US4768424 Roof ventilator |
| 08/30/1988 | US4767285 Electric blower |
| 08/25/1988 | WO1988006240A1 Transport ventilator |
| 08/24/1988 | CN88200333U Double closed type air changing fan |
| 08/24/1988 | CN87214558U Smoke removing hood for kitchen |
| 08/24/1988 | CN87205088U Adjustible oscillating device for the angle of electric fan |
| 08/17/1988 | CN87204726U Dual-aperture integral body oil-retaining bearing |
| 08/10/1988 | EP0277938A2 Compressor unit with a screw compressor |