| Patents for H01K 3 - Apparatus or processes adapted to the manufacture, installing, removal or maintenance of incandescent lamps or parts thereof (2,889) |
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| 01/01/1991 | US4981029 Electric heater coil assembly termination apparatus and method of use |
| 12/13/1990 | DE4014068A1 Transmission testing of pump path of bulb pinched bases - using differential pressure switch in air duct allowing automatic control before further processing in prodn. line for incandescent lamps |
| 11/28/1990 | CN2066622U Telescope device for placing or removing overhead lamp |
| 11/27/1990 | US4973878 Filament structure and method of making such structure |
| 11/20/1990 | US4971757 Isostatic pressing a tungsten compact and dopant |
| 11/14/1990 | EP0397422A2 Filament support for incandescent lamps |
| 10/17/1990 | EP0392456A2 Method of producing incandescent lamps with an halogen filling and lamp produced by the method |
| 10/10/1990 | CN2063692U Rod type bulb-replacing brake-pulling device |
| 10/03/1990 | EP0389717A2 Ultraviolet ray-shielding tube |
| 09/27/1990 | DE4008817A1 Reflektorlampen-einheit Reflector lamp unit |
| 09/25/1990 | US4959585 Electric incandescent lamp and method of manufacture therefor |
| 09/05/1990 | CN1045198A New method for making core column in common bulb |
| 09/04/1990 | US4954113 Light bulb having a multicolored design and method of manufacturing thereof |
| 08/29/1990 | CN2061333U Renovator for lamp bulb |
| 08/22/1990 | CN2060945U Adjustable, automatically opening-closing filament-settling tubes |
| 08/08/1990 | CN1044523A Energy saving lighting system and products thereof |
| 08/08/1990 | CN1009147B Electric lamp having mirror-coated lamp vessel |
| 07/17/1990 | US4942331 Filament alignment spud for incandescent lamps |
| 06/27/1990 | EP0374345A2 Incandescent lamps including a combined getter |
| 06/20/1990 | EP0373632A2 Lamp filament support construction |
| 06/19/1990 | US4934951 Holder for small incandescent light bulbs |
| 06/16/1990 | CA2005583A1 Lamp filament support construction |
| 06/13/1990 | CN1043037A Prodn. method of high-efficiency vacuum ultraviolet source |
| 06/06/1990 | CN1042804A Halogen incandescent lamp and method of manufacturing halogen incandescent lamp |
| 05/30/1990 | EP0370554A1 Halogen incandescent lamp and method of manufacturing a halogen incandescent lamp |
| 05/23/1990 | EP0369371A2 Method of manufacturing a lamp vessel |
| 05/23/1990 | EP0369370A2 Method of manufacturing a lamp vessel |
| 05/17/1990 | DE4001135A1 Tongs for easy removal of halogen bulbs from lamp housings - has handle part and two clamping fingers which form two pairs of gripping arms directed at right angles to each other |
| 05/09/1990 | EP0367343A2 Car headlight lamp and method of manufacturing same |
| 05/08/1990 | US4923839 Catalyst of acid acceptor polymer, halogenated organic compound, phenylphosphine compound |
| 04/25/1990 | EP0364831A2 Electric incandescent lamp and method of manufacture therefor |
| 04/17/1990 | US4918356 Electric incandescent lamp and method of manufacture therefor |
| 04/04/1990 | EP0361674A1 Light source |
| 03/21/1990 | EP0359564A2 A method of manufacturing a light diffusing glass envelope |
| 03/21/1990 | EP0359563A2 Method and apparatus for generating a fine dispersion of particles in a gas |
| 03/21/1990 | EP0359560A2 An apparatus for manufacturing a light diffusing glass envelope |
| 03/21/1990 | CN2054943U Automatic clasping machine for bulb tungsten filament |
| 03/21/1990 | CN1007302B Method for fixing the pin of bayonet lamp cap and the special equipment thereof |
| 03/14/1990 | EP0358273A1 Reflector lamp |
| 03/14/1990 | EP0358061A2 Electric incandescent lamp and method of manufacture therefor |
| 03/07/1990 | CN1007102B Welding technique for quartz and copper in xenon lamp with big power |
| 02/28/1990 | CN2053799U Safety lamp-fitting means |
| 02/14/1990 | CN2052957U Adjustible lamp loading and unloading device |
| 02/14/1990 | CN2052956U High position loading and unloading tool |
| 02/14/1990 | CN2052955U Loading and unloading stick for overhead lamp |
| 01/30/1990 | US4897767 Headlight lantern system and electric lamp for this system |
| 01/23/1990 | US4895540 Filament support structure mounting method |
| 01/17/1990 | CN2051399U Fixed incandescent lamp bulb changing fork |
| 01/02/1990 | US4891555 Metal vapor discharge lamps |
| 12/27/1989 | EP0347836A2 Lamp replacement tool |
| 12/19/1989 | US4888519 Polyethersulphone resin adhesives connecting lamp vessel and lamp cap in a transverse direction |
| 12/12/1989 | US4886994 Snap-in light bulb |
| 11/21/1989 | CA1263137A1 Electric lamp having a mirror-coated lamp vessel |
| 11/15/1989 | EP0341257A1 Process and device for improving the vacuum in a gas-tight container |
| 09/19/1989 | US4868451 Lamp filament support construction |
| 09/12/1989 | US4864899 Illuminating light bulb remover |
| 09/05/1989 | US4863527 Process for producing doped tungsten wire with low strength and high ductility |
| 08/30/1989 | CN1035201A Method for fixing the pin of bayonet lamp cap and the special equipment thereof |
| 08/16/1989 | EP0328065A2 Improved getter for incandescent lamps |
| 08/01/1989 | US4852925 Lamp replacement tool |
| 06/13/1989 | CA1255736A1 Bonded beam lamp |
| 06/07/1989 | CN2039058U Device for placing or removing lamp |
| 05/10/1989 | CN2037500U Displacement device for lamp bulb |
| 04/05/1989 | CN1032140A Headlight lantern system and electric lamp for this system |
| 03/29/1989 | EP0309040A1 Headlight lantern system and electric lamp for this system |
| 03/15/1989 | CN2034334U Replace device for light bulb installed high above the ground |
| 03/15/1989 | CN2034333U Electric device for placing and removing illumination lamp installed high above the ground |
| 03/14/1989 | US4812710 Self-tensioning coiled-coil filaments held against plate-like surfaces of current supply leads |
| 03/08/1989 | EP0306269A2 Double-enveloped electric lamp |
| 03/08/1989 | EP0305730A2 Holder for a small lamp bulb |
| 03/07/1989 | US4810932 Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such |
| 02/14/1989 | US4804878 Electric lamp, base for use therewith and method of assembling same |
| 01/24/1989 | US4799518 Machine for sequential manufacture of incandescent lamp filaments |
| 01/11/1989 | EP0194253B1 Light bulb changing apparatus |
| 01/10/1989 | US4797302 Aluminum coating used to form aluminum oxide coating |
| 11/29/1988 | CA1245704A1 Bridgeless tungsten halogen lamp |
| 10/12/1988 | CN87212980U Bulb installer |
| 09/13/1988 | CA1241940A1 Sealed beam lamp unit and method for an improved sealed exhaust hole |
| 09/06/1988 | US4768985 Method of manufacturing miniature tipless halogen lamp and apparatus for carrying out the same |
| 08/10/1988 | EP0277659A2 Electric lamp, base for use therewith and method of assembling same |
| 08/04/1988 | DE3701724A1 Verfahren und vorrichtung zur verbesserung eines vakuums in einem gasdichten behaelter Method and device for improvement of a vacuum in a gas-tight container |
| 07/28/1988 | WO1988005599A1 Process and device for improving the vacuum in a gas-tight container |
| 07/26/1988 | US4759630 Detects the state of gas that is sealed in an electric lamp |
| 07/19/1988 | US4758761 Electric lamp vessel having a mirror coating with a sharply defined boundary |
| 07/12/1988 | US4756701 Method of making a tungsten-halogen lamps having an enhanced temperature gradient |
| 06/07/1988 | US4749901 Elimination of exhaust tube relief in press-sealed lamp |
| 05/11/1988 | CN86211041U Device for lamp fitting |
| 05/10/1988 | US4743802 Tungsten halogen incandescent lamp with arc preventing fill |
| 04/12/1988 | CA1235174A1 Filament support for incandescent lamp |
| 03/31/1988 | DE3632908A1 Method and device for testing tube lamps |
| 03/30/1988 | EP0261449A2 Winding machine for the quantity manufacture of coiled incandescent bodies for electric lamps |
| 03/02/1988 | CN87205930U Hinged lamp bracket |
| 02/10/1988 | EP0255638A2 Incandescence lamp and manufacturing of its tubular envelope |
| 01/19/1988 | US4720652 Sealed beam headlamp and method for testing its serviceability |
| 01/19/1988 | US4719826 Light bulb extractor |
| 12/01/1987 | US4710677 Coating envelope with pure metal oxide |
| 10/28/1987 | CN87102808A Electric lamp having mirror-coated lamp vessel |
| 10/27/1987 | US4702717 Method of making electric lamp with internal conductive reflector |
| 10/21/1987 | EP0241987A1 Electric lamp having a mirror-coated lamp vessel |
| 10/21/1987 | CN87204107U Lamp-setting sleeve |