CH249243A
(en )
1947-06-15
Gas or vapor-filled electric discharge tube.
CH260736A
(en )
1949-03-31
Electric discharge lamp.
CH239109A
(en )
1945-09-15
High pressure electric discharge tube.
CH239640A
(en )
1945-10-31
Electric discharge tube with secondary emission electrode.
DK68723C
(en )
1949-03-14
Electric high-pressure mercury vapor discharge lamp with high power for DC operation.
DK71159C
(en )
1950-06-26
Gas-filled, electric high-pressure discharge lamp with high power for direct current operation.
CH248330A
(en )
1947-04-30
Electric discharge tube.
ES172331A1
(en )
1946-03-01
HIGH PRESSURE ELECTRIC MERCURY VAPOR LAMP
DK66769C
(en )
1948-05-10
Electric Mercury fluorescent lamps, especially for DC operation.
CH241775A
(en )
1946-03-31
Electric discharge tube.
DK69275C
(en )
1949-05-30
System with an electric high-pressure mercury vapor discharge device.
CH261759A
(en )
1949-05-31
Contact element on electric discharge tubes and incandescent lamps.
DK65345C
(en )
1947-01-20
Electric High Pressure Discharge Lamp with Two Indirect Heated Electrodes.
DK71158C
(en )
1950-06-26
Electric high-pressure metal vapor discharge lamp, in particular for street lighting.
DK66631C
(en )
1948-04-19
Systems for Operation of Gaseous Discharge Lamps Using AC Power.
DK72296C
(en )
1951-03-19
Method for manufacturing an electric discharge lamp.
FR879352A
(en )
1943-02-22
electrode for an electric discharge vessel, not intended to be used as an incandescent cathode
CH243222A
(en )
1946-06-30
High pressure electric discharge tube.
DK68172C
(en )
1948-12-20
Glow discharge tube for voltage stabilization.
DK81247C
(en )
1956-07-02
Initiator for electric discharge lamps.
DK70852C
(en )
1950-04-11
Base for electric lamps.
ES162695A1
(en )
1944-03-01
PROCEDURE FOR THE MANUFACTURE ELECTRODOS DE INCANDESCENCIA FOR ELECTRIC DISCHARGE LAMPS
CH227700A
(en )
1943-06-30
Electric high pressure gas discharge lamp with quartz vessel.
CH241768A
(en )
1946-03-31
Electric discharge tube.
DK77386C
(en )
1954-04-12
Initiator for electric discharge lamps.