Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04D - Non-positive-displacement pumps › F04D 25 - Pumping installations or systems specially adapted for elastic fluids
Patents for F04D 25 - Pumping installations or systems specially adapted for elastic fluids (17,127)
12/1989
12/12/1989US4885984 Radon removal apparatus
12/07/1989DE3828011A1 Ventilating device for simultaneous aeration and deaeration of spaces
12/06/1989CN2048909U Electric razor matched fan wheel
12/05/1989US4885488 Miniaturized fan for printed circuit boards
12/05/1989US4884947 Ceiling fan assembly
12/05/1989US4884314 Portable blower
11/1989
11/29/1989CN2048529U Table for fan
11/29/1989CN2048528U Folding gentle breeze hanging fan
11/29/1989CN2048527U Cold and warm fan with ultralow speed
11/28/1989US4883982 Electronically commutated motor, blower integral therewith, and stationary and rotatable assemblies therefor
11/28/1989US4883406 Transport ventilator
11/22/1989CN2048134U Cold-air electric fan
11/22/1989CN2048133U 手提式电风扇 Portable Toilet
11/22/1989CN2048132U Centrifugal ventilator
11/22/1989CN2048131U Dc electric fan
11/22/1989CN2048130U Portable assembly microelectric fan
11/22/1989CN2048129U Breezy electric fan
11/22/1989CN2048128U Blower of cleaner without volute & guide pulley
11/22/1989CN2048127U Hand microelectric fan
11/22/1989CN2048126U Folding ceiling fan of retractable lamp holder
11/22/1989CN2048125U Electricfan of sandwich material
11/15/1989CN2047734U Universal hand-operated vertical air blower
11/09/1989DE3814612A1 Ceiling fan
11/08/1989EP0340685A2 Composite vacuum pump
11/07/1989US4878813 Vacuum pump
11/07/1989US4878806 Dual mounting ceiling fan
11/02/1989EP0339408A2 Radial fan
10/1989
10/26/1989DE3811648A1 Air pump
10/25/1989CN2046560U Centrifugal air machine
10/25/1989CN2046559U Stepless speed regulating gentle breeze electric fan
10/24/1989CA1262466A1 Convection blower for conventional electric ovens
10/19/1989DE3810684A1 Blower for a forced-air cooker
10/18/1989CN1036437A Fun of cylindrical rotor with multiple-blades
10/10/1989US4872399 Convertible fan assembly
10/04/1989CN2045434U Comfort ceiling fan
10/03/1989US4871299 Screw compressor unit including a centrifugal clutch
09/1989
09/28/1989DE3908511A1 Fan
09/28/1989DE3908498A1 Fan
09/28/1989DE3908493A1 Fan
09/28/1989DE3908492A1 Fan
09/28/1989DE3908484A1 Fan
09/26/1989US4869641 Compressor
09/20/1989CN2044657U Pendant fan with auto-whirl support
09/20/1989CN2044656U 折叠电扇 Folding fan
09/19/1989US4867647 Electric fan with a speed selection device positioned near the motor
09/14/1989DE3805651A1 Apparatus with a fan arranged in a housing, in particular for tanning equipment
09/12/1989US4866320 Fan assembly
09/07/1989DE3839978C1 Compressor gearing
09/06/1989CN2044015U Horizontal electric fan installed on wall
09/06/1989CN2044014U A.c. breeze electric fan
09/06/1989CN2044013U Electric fan controlled by temp.
09/05/1989US4863346 Outer casing assembly for ceiling-fan motors
08/1989
08/30/1989CN2043680U Cooling and warm fan with radiation-type electric heater
08/29/1989US4861237 Axial-flow fan apparatus
08/23/1989CN2043287U Electric fan capable of vertically swinging
08/23/1989CN2043286U Pneumatic driven electric fan
08/23/1989CN2043084U New type floor combined electric fan
08/22/1989US4859888 Cross flow type cooling fan device
08/16/1989CN2042902U Automatic-swing fan
08/16/1989CN2042901U Fan
08/15/1989US4856968 Air circulation device
08/09/1989CN2042525U Natural-wind simulating electric fan
08/09/1989CN2042524U Air conditioner for rotary cushioning-pipe
08/09/1989CN2042521U Air-source for air-cushion experiment
08/09/1989CN1034609A 吊扇 Ceiling fan
08/02/1989CN2042123U Flower-basket type electric fan
08/02/1989CN1034415A Multifunctional air-drawing and-exhausting apparatus and its assemblies
07/1989
07/26/1989CN2041735U Synchronous electric fan with gentle breeze
07/25/1989US4850799 Rubber flywheel for ceiling fans
07/11/1989US4846399 Fan device
07/11/1989US4845941 Gas turbine engine operating process
07/04/1989US4843813 Compact turbocompressor unit
06/1989
06/28/1989CN2040186U Electric-fan capable of simulating natural wind
06/28/1989CN2040185U Cyclonic-wind ceiling fan
06/28/1989CN2040184U Energe-inconsumable semiautomatic airblower
06/28/1989CN2040183U Pocket electric fan
06/28/1989CN2040182U Low-noise opposite-rotation and axial-flow local ventilator
06/21/1989CN2039760U 带灯吊扇 Ceiling fans with light
06/14/1989CN2039361U Energy economizer for electric fan
06/14/1989CN2039360U Refrigerator compressor driven by duplex-winding motor
06/13/1989US4838761 Methods and apparatus for preventing or retarding fruit and vegetable freezing
06/13/1989US4838760 Fan with motor cooling enhancement
06/13/1989US4838151 Combination window and floor fan
06/08/1989DE3838868A1 Fan assembly, in particular for the radiator of an internal combustion engine, having a plurality of fan wheels
06/08/1989DE3740132A1 Belueftungseinrichtung fuer den innenraum eines fahrzeuges Belueftungseinrichtung for the interior of a vehicle
06/07/1989CN2038958U Axial flow type electric fan
05/1989
05/31/1989CN2038564U Automatic scavenger fan
05/31/1989CN2038563U 低速吊扇 Low-speed ceiling fan
05/30/1989US4834629 Modular fan
05/24/1989EP0317186A2 Engine cooling fan
05/24/1989CN2038163U 电风扇 Fan
05/24/1989CN2038162U Domestic multifunction combination electric fan
05/18/1989WO1989004135A1 Portable blower
05/17/1989EP0315747A1 Electric fan with a flat housing
05/16/1989US4831505 Circular flourescent tube light fixture for ceiling fan
05/16/1989US4829625 Portable vacuum cleaner/air compressor with light
05/10/1989CN2037406U Table fan adding unit powering cradle
05/03/1989CN2037007U Household air-extractor fan
04/1989
04/26/1989CN2036593U Scavenger fan
04/26/1989CN2036592U Breeze transducer for electric fan
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