CH209236A
(en )
1940-03-31
Gas discharge tube lamp.
FR844915A
(en )
1939-08-04
Improvements in the construction of discharge lamps
FR847408A
(en )
1939-10-10
Pressurized vapor discharge lamp with fixed glowing electrodes
CH205667A
(en )
1939-06-30
Discharge tube.
DK67364C
(en )
1948-08-09
Electric filament lamp or discharge tube and procedure for the manufacture of the lamp or tube.
CH196088A
(en )
1938-02-28
Gas mask body.
FR812309A
(en )
1937-05-07
Improvements to metal vapor discharge lamps or tubes and in particular to mercury vapor lamps used for the production of ultraviolet radiation
CH134774A
(en )
1929-08-15
Discharge tube with hot cathode and gas filling.
DK54247C
(en )
1938-01-31
Discharge tube or similar electric source of radiation.
DK63808C
(en )
1945-08-13
Tubular Electric Low Pressure Air Discharge Lamp and Procedure for Its Manufacture.
DK58410C
(en )
1941-02-10
Electric Gaseous Discharge Tube.
DK62618C
(en )
1944-08-28
Electric Gaseous Discharge Tube.
ES153431A1
(en )
1943-03-01
IMPROVEMENTS IN THE MANUFACTURE OF DISCHARGE LAMPS
AU109920B2
(en )
1940-03-07
Improvements in or relating tothe manufacture of electron discharge tubes
AT156069B
(en )
1939-05-10
Electric gas discharge tube.
AT156070B
(en )
1939-05-10
Electric gas discharge tube.
DK56254C
(en )
1939-06-06
Electric Mercury vapor discharge lamp.
CA267683A
(en )
1927-01-18
Gas and vapour treatment
CA371246A
(en )
1938-01-18
Gas or vapour discharge device
DK55013C
(en )
1938-07-25
High pressure mercury vapor discharge pipe.
ES144226A2
(en )
1938-12-16
IMPROVEMENTS IN THE MANUFACTURE OF ELECTRIC DISCHARGE TUBES AND LAMPS
FR840247A
(en )
1939-04-21
Metal vapor atmosphere discharge tube
CA273700A
(en )
1927-09-06
Electron discharge tube
CA275834A
(en )
1927-11-29
Electron discharge tube
DK65402C
(en )
1947-02-10
Glass container, in particular for electric discharge tubes or incandescent lamps and the procedure for its manufacture.