| Patents for H01K 9 - Lamps having two or more incandescent bodies separately heated (790) |
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| 05/25/1994 | CN2166521Y Bulb of incandescent lamp |
| 05/04/1994 | CN2164114Y Three-filament screw socket incandescent lamp bulb |
| 04/27/1994 | CN2163443Y Integrated lamp |
| 04/20/1994 | CN2162711Y Multi-purpose bulb and socket with adjustable power |
| 04/20/1994 | CN2162710Y Special incandescent lamp for fluorescent lamp ballast |
| 02/16/1994 | CN2156587Y Multi-filament bulb |
| 01/12/1994 | CN2153143Y Lighting lamp with multiple filaments |
| 12/22/1993 | CN2150627Y Double tungsten lamp bulb with button on head of bulb |
| 12/22/1993 | CN2150626Y Multi-purpose lamp bulb |
| 12/02/1993 | DE4317245A1 Car headlamp - has light stop between bulb and lens with two stepped edges of different angles to vertical |
| 12/01/1993 | CN2148397Y Adjustable power high low lamp and its special lampholder |
| 11/03/1993 | CN2145444Y Double-filament lamp for miner |
| 11/03/1993 | CN2145443Y Light regulation apparatus with step of desk lamp |
| 08/25/1993 | CN2141126Y New-type bulb of incandescent lamp |
| 08/24/1993 | US5239231 Filament attachment method for dual filament halogen lamp having a common ground connection |
| 06/16/1993 | CN2136525Y Light adjuctable lamp |
| 06/02/1993 | CN2135196Y Reusing incandescent lamp |
| 05/26/1993 | CN2134717Y Lamp bulb with dual filament |
| 05/19/1993 | CN2133938Y Long service life bayonet-type incandescent bulb |
| 05/05/1993 | CN2132370Y Long-life incandescent lamp |
| 05/05/1993 | CN2132286Y General long-life energy-saving bulb for incandescent lamp |
| 04/14/1993 | CN2129977Y Two filament lamp |
| 04/07/1993 | CN2129471Y Convenient longlife incandescent lamp |
| 02/16/1993 | US5187405 Double filament incandescent lamp |
| 11/25/1992 | CN2123125U Three-filament incandescent bulb and fluorescent lamp tube |
| 11/18/1992 | CN1066344A Colour changeable bulb |
| 11/11/1992 | CN2121758U Power adjustable long service bulb |
| 10/14/1992 | CN1065371A Technology for prolonging service time of incandescent lamp |
| 09/30/1992 | CN2117652U Combined lamp |
| 08/26/1992 | EP0500340A2 Double filament incandescent lamp |
| 08/12/1992 | CN2112895U Aluminium head bulb for vehicles use |
| 08/12/1992 | CN2112894U Colour charyeable bulb |
| 07/08/1992 | CN1062618A Multi-filament incandescent lamp |
| 06/24/1992 | CN2108363U Variable power incandescent lamp |
| 06/24/1992 | CN2108362U Plug-in multipole lamp socket |
| 06/10/1992 | CN2107065U Double-filament bulb |
| 05/27/1992 | CN1061490A Light bulb |
| 05/20/1992 | CN2105125U Dual-purpose dc/a.c lamp |
| 05/14/1992 | WO1992008241A1 Method for emission of coloured light by an electric lamp |
| 05/05/1992 | US5111105 Vehicular lighting device |
| 04/22/1992 | CN2102568U Filament changeable lamp and its mutlifilament lamp |
| 03/04/1992 | CN2098091U Power-changed light bulb and socket |
| 02/26/1992 | CN2097446U Long-life incandescent lamp bulb with combined filament |
| 02/25/1992 | US5091632 Infrared radiator |
| 02/12/1992 | CN2096131U Multifunctional multi-wire incandescent lamp |
| 01/28/1992 | US5084806 Light emitting display device and stem for light emitting display device |
| 01/08/1992 | CN2092814U Durable white heat light bulb |
| 12/18/1991 | CN1057129A Adjustable convenient and safety bulb of energy saving |
| 12/11/1991 | CN2090580U Long service life incandescent lamp |
| 10/30/1991 | CN2087816U Multifunctional long-life energy-saving civil lighting lamp |
| 09/11/1991 | CN2084659U Long life light changing lamp |
| 09/10/1991 | CA1288801C Electric lamp with insulating base providing improved wire retention |
| 08/21/1991 | CN2083384U Power-saving device of civil light-regulating illumination |
| 07/24/1991 | CN2081575U Multi-functional long-life lamp |
| 07/17/1991 | CN2081152U Long-life lamp bulb and base |
| 07/10/1991 | CN2080708U Incandescent bulb capable of changing power |
| 07/03/1991 | CN1052749A Multi-light adjustable long life lamp |
| 06/26/1991 | CN2079816U Light bulb insert-drawout type lamp holder |
| 06/19/1991 | CN2079354U Tread end two-wire incandescencet bulb and socket |
| 05/29/1991 | EP0428835A2 Infrared radiator |
| 05/01/1991 | CN2076272U Bayonet double-filament bulb |
| 04/24/1991 | CN2075825U Long life multi-power lamp and power switcher |
| 03/26/1991 | US5003224 Method and a device for replacing incandescent filaments, and a lamp with several filaments |
| 03/20/1991 | EP0417835A1 Electric incandescent lamp |
| 03/13/1991 | CN2073166U Double-filament filament lamp |
| 02/06/1991 | CN2070951U Polularizing type multipurpose durable incandescent lamp |
| 01/30/1991 | CN2070502U Incandescent lamp with multi-light |
| 01/23/1991 | CN2070035U Spare light bulb |
| 01/09/1991 | CN2069170U Dual filament lamp adjustable with revolving circular ring switch |
| 01/02/1991 | CN2068724U Multipurpose long service bulb |
| 10/03/1990 | CN2063292U Double-life bulb and lamp holder |
| 09/05/1990 | CN2061734U Luminous power controllable electric incandescent lamp |
| 07/11/1990 | CN2059270U Sleeve light adjusting lamp |
| 05/15/1990 | US4926209 Image recording apparatus using planar illuminator as a light source |
| 05/09/1990 | CN2057031U Dual- or multi-filament lamp |
| 04/04/1990 | CN2055642U Multi-power long service life bulb |
| 02/14/1990 | CN2052958U Longlife lamp with adjustable power |
| 01/10/1990 | CN2051015U Simple and durable bulb with double filaments |
| 12/27/1989 | CN2050218U Colour illumination colour-changing bulb |
| 11/22/1989 | CN2048241U Long life & multi-functional incandescent lamp and lampholder thereof |
| 11/01/1989 | CN2047069U Incandescent lamp with long service life and electronic regulating light |
| 10/25/1989 | CN2046685U Multi-filament lamp bulb with magnetic controller |
| 10/18/1989 | CN2046275U Multicolour bulb |
| 10/18/1989 | CN2046274U Change light lamp |
| 10/03/1989 | CA1262170A1 Multi-level fuser lamp |
| 09/26/1989 | CA1261308A1 Low wattage double filament tungsten-halogen lamp |
| 07/04/1989 | CA1256933A1 Mounting structure for multi-filaments of an incandescent lamp |
| 06/14/1989 | EP0320245A2 Multiple color light with stucture to prevent color bleeding |
| 06/13/1989 | US4839779 Multiple color light with structure to prevent color bleeding |
| 05/10/1989 | CN2037501U Long-life incandescence lamp |
| 04/12/1989 | CN1003898B Electric incandescent lamp with reflecting screen |
| 04/06/1989 | WO1989003119A1 A method and a device for replacing incandescent filaments, and a lamp with several filaments |
| 01/31/1989 | US4801845 Halogen incandescent lamp structure |
| 01/18/1989 | CN2031162U Three tungsten filament lamp bulb and lamp socket |
| 01/04/1989 | CN2030378U Multiple loop lamp |
| 12/14/1988 | CN87205128U Energy-saving lamps with watt regulator |
| 12/07/1988 | CN88204588U Rotatory circle clasp shift light-adjusting multifilament bulb |
| 11/22/1988 | CA1245275A1 Electric lamp with insulating base |
| 09/14/1988 | CN87207307U Power changing illuminator |
| 08/31/1988 | EP0280475A2 The bulb with residual lighting function on burning out of the filament |