FR842065A
(en )
1939-06-05
Electric vapor discharge lamp, high pressure, with quartz container
FR828877A
(en )
1938-06-01
High pressure metal vapor discharge electric lamp
FR826011A
(en )
1938-03-21
Metal vapor discharge tube
FR847408A
(en )
1939-10-10
Pressurized vapor discharge lamp with fixed glowing electrodes
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.
FR820368A
(en )
1937-09-10
Single-ended electric discharge tube, especially metal vapor discharge lamp
DK56255C
(en )
1939-06-06
Electric Lamp with a High Pressure Metal Vapor Discharge Tube.
DK58047C
(en )
1940-10-07
Electric Lamp with a High Pressure Mercury Vapor Discharge Tube.
DK60416C
(en )
1942-12-14
System with a gaseous Glow Electrode Discharge Tube.
DK57231C
(en )
1940-02-05
Electric Lamp with a Gaseous Discharge Tube.
FR803058A
(en )
1936-09-22
Mercury vapor electric discharge tube
DK57017C
(en )
1939-12-11
Electric Lamp with at least one High-pressure mercury vapor discharge tube.
CH204074A
(en )
1939-04-15
High pressure electric metal vapor discharge tube.
CH203800A
(en )
1939-03-31
Electric lamp with a high pressure metal vapor discharge tube.
DK57763C
(en )
1940-07-08
High pressure metal vapor discharge lamp.
CH205007A
(en )
1939-05-31
Lamp with a metal vapor discharge tube.
DK57900C
(en )
1940-08-19
Electric Lamp with a Gaseous Discharge Tube.
FR840825A
(en )
1939-05-04
High pressure metal vapor electric discharge tube
DK56629C
(en )
1939-09-04
Electric High pressure metal vapor discharge pipe.
DK58271C
(en )
1940-12-23
Electric Lamp with a liquid-cooled High-pressure steam discharge tube.
DK56256C
(en )
1939-06-06
High pressure metal vapor discharge pipe.
FR827706A
(en )
1938-05-03
Double-walled metal vapor discharge lamp
DK58808C
(en )
1941-06-30
Electric Discharge Tube with a Secondary Emission Electrode.
DK55013C
(en )
1938-07-25
High pressure mercury vapor discharge pipe.