FR842065A
(en )
1939-06-05
Electric vapor discharge lamp, high pressure, with quartz container
CH209236A
(en )
1940-03-31
Gas discharge tube lamp.
DK68947C
(en )
1949-04-19
High pressure mercury vapor discharge device, preferably lamp with tungsten electrodes.
FR851874A
(en )
1940-01-16
High pressure mercury vapor electric lamp with solid incandescent electrodes
FR856699A
(en )
1940-08-01
High pressure mercury vapor lamp, with initial gas charge and self-heating incandescent cathodes
DK60416C
(en )
1942-12-14
System with a gaseous Glow Electrode Discharge Tube.
CH224049A
(en )
1942-10-31
Electric discharge tube.
DK65077C
(en )
1946-11-18
Electric High-pressure discharge lamp, especially Mercury high-pressure lamp.
DK58448C
(en )
1941-02-24
Electric Mercury vapor discharge lamp.
DK68168C
(en )
1948-12-20
Spherical high pressure mercury vapor discharge lamp.
DK58047C
(en )
1940-10-07
Electric Lamp with a High Pressure Mercury Vapor Discharge Tube.
DK56254C
(en )
1939-06-06
Electric Mercury vapor discharge lamp.
ES143548A1
(en )
1937-06-01
An electric discharge lamp, quartz.
DK57068C
(en )
1939-12-27
Electric Mercury vapor discharge lamp.
DK57255C
(en )
1940-02-12
Gaseous, electric Discharge tube.
DK77386C
(en )
1954-04-12
Initiator for electric discharge lamps.
DK76489C
(en )
1953-10-12
Initiator for electric discharge lamps.
DK71338C
(en )
1950-08-07
Initiator for electric discharge lamps.
DK56255C
(en )
1939-06-06
Electric Lamp with a High Pressure Metal Vapor Discharge Tube.
CH204074A
(en )
1939-04-15
High pressure electric metal vapor discharge tube.
DK57017C
(en )
1939-12-11
Electric Lamp with at least one High-pressure mercury vapor discharge tube.
DK69151C
(en )
1949-05-09
Electric low pressure discharge pipe.
DK74210C
(en )
1952-05-26
Light source with one or more low-pressure mercury vapor discharge lamps.
DK55143C
(en )
1938-08-29
Electric Lamp with a High Pressure Metal Vapor Discharge Tube.
DK56743C
(en )
1939-10-02
Electric Lamp with a High Pressure Metal Vapor Discharge Tube.