CH249243A
(en )
1947-06-15
Gas or vapor-filled electric discharge tube.
CH239640A
(en )
1945-10-31
Electric discharge tube with secondary emission electrode.
DK64771C
(en )
1946-09-09
Electric Discharge Tube with Unbroken Secondary Emission Electrode.
CH248330A
(en )
1947-04-30
Electric discharge tube.
CH241775A
(en )
1946-03-31
Electric discharge tube.
FR904307A
(en )
1945-11-02
Electric discharge tube
DK72568C
(en )
1951-05-28
Electric discharge tube with an electron mirror.
DK69799C
(en )
1949-08-29
Electric discharge tube with ignition electrode.
CH241768A
(en )
1946-03-31
Electric discharge tube.
FR915556A
(en )
1946-11-12
Electric discharge tube
DK66908C
(en )
1948-05-31
High Voltage Ion Discharge Tube with at least one liquid electrode.
AT168459B
(en )
1951-06-11
Electrode for electric discharge tubes
DK67463C
(en )
1948-08-23
Electron beam tubes with cylindrical, telescopically interlocking electrodes.
DK66122C
(en )
1947-12-29
Electric Discharge Tube with a Secondary Emission Electrode located outside the Field of View of the Cathode.
CH247329A
(en )
1947-02-28
Electric discharge tube with an electron mirror.
CH240902A
(en )
1946-01-31
Electric discharge tube with an electron mirror.
DK66248C
(en )
1948-01-26
Electric Fluorescent Tube with Ignition Electrode.
DK63985C
(en )
1945-10-01
System with a gas-filled electric discharge tube with resonant ignition.
DK59049C
(en )
1941-09-22
Electric Discharge Tube with Secondary Emission Electrode.
CH247335A
(en )
1947-02-28
Cathode ray tube.
CH247336A
(en )
1947-02-28
Discharge tube.
DK70227C
(en )
1949-11-21
Electric discharge tube with several electrode systems.
DK68633C
(en )
1949-02-28
Electric discharge tube with a catch grid in front of the anode.
DK68018C
(en )
1948-11-29
Electric discharge tube with a positive shield grating on the cathode side of a control grating.
DK62206C
(en )
1944-05-01
Electric Cathode Glow Tube with several sheath-shaped, superimposed Electrodes.