CH249243A
(en )
1947-06-15
Gas or vapor-filled electric discharge tube.
CH239640A
(en )
1945-10-31
Electric discharge tube with secondary emission electrode.
CH248330A
(en )
1947-04-30
Electric discharge tube.
CH241775A
(en )
1946-03-31
Electric discharge tube.
CH231994A
(en )
1944-04-30
Incandescent lamp filled with gas.
DK69536C
(en )
1949-07-11
Fluorescent electric discharge lamp with helical discharge path.
DK64771C
(en )
1946-09-09
Electric Discharge Tube with Unbroken Secondary Emission Electrode.
CA410726A
(en )
1943-02-23
Fluorescent lamp operating mechanism
DK63062C
(en )
1945-01-02
Tube lamp socket with Holder springs.
DK68172C
(en )
1948-12-20
Glow discharge tube for voltage stabilization.
DK67192C
(en )
1948-07-12
Lamp holder with suspension tube.
DK72568C
(en )
1951-05-28
Electric discharge tube with an electron mirror.
DK66350C
(en )
1948-02-23
Glow plugs with several series-connected discharge lines.
FR902507A
(en )
1945-09-03
Discharge tube or incandescent lamp
CH225881A
(en )
1943-02-28
Noble gas discharge lamp.
CH241768A
(en )
1946-03-31
Electric discharge tube.
ES8919Y
(en )
1945-07-01
Lamp for lighting.
CH247336A
(en )
1947-02-28
Discharge tube.
CA414787A
(en )
1943-08-31
Fluorescent lamp
CA410069A
(en )
1943-01-19
Fluorescent lighting unit
DK63866C
(en )
1945-08-27
Ignition device at System with gas-filled, electric Discharge pipes.
DK66769C
(en )
1948-05-10
Electric Mercury fluorescent lamps, especially for DC operation.
DK62206C
(en )
1944-05-01
Electric Cathode Glow Tube with several sheath-shaped, superimposed Electrodes.
ES10243Y
(en )
1945-08-01
Electric lamp with its own reflector.
DK63985C
(en )
1945-10-01
System with a gas-filled electric discharge tube with resonant ignition.