DK59009C
(en )
1941-09-08
Coupling with a discharge tube, which has a secondary emission electrode for amplifying the anode current.
DK57256C
(en )
1940-02-12
Coupling with a discharge tube, which has a secondary emission electrode for amplifying the anode current.
DK61855C
(en )
1944-01-31
Coupling with Discharge Pipe, which has a Secondary Emission Electrode for Amplification of the Anode Current.
CH215769A
(en )
1941-07-15
Cathode for electron tubes.
NL51881C
(en )
1942-02-16
Electron tube, provided with a secondary emission electrode
DK59049C
(en )
1941-09-22
Electric Discharge Tube with Secondary Emission Electrode.
CH201099A
(en )
1938-11-15
Electric discharge tube with a secondary emission electrode.
DK50795C
(en )
1935-10-21
Oxide cathode, especially for a gaseous discharge tube.
DK66090C
(en )
1947-12-22
Electric Discharge Tube with a Secondary Emission Electrode.
DK35714C
(en )
1926-03-01
Discharge tube suitable for tripping a secondary electron emission.
DK58647C
(en )
1941-05-05
Emission electrode for electric discharge tubes.
DK58808C
(en )
1941-06-30
Electric Discharge Tube with a Secondary Emission Electrode.
DK58567C
(en )
1941-04-07
Coupling with a Discharge Tube containing a Secondary Emission Electrode for Gain.
CH260192A
(en )
1949-02-28
Electron tube with a secondary emission electrode.
DK62717C
(en )
1944-09-25
Electron tubes with low anode secondary emission.
DK56194C
(en )
1939-05-22
Electric Discharge Tube with a Secondary Emission Electrode.
DK56347C
(en )
1939-06-26
Electric Discharge Tube with a Secondary Emission Electrode.
DK52318C
(en )
1936-10-19
Coupling containing an electric discharge tube, by which the electrons emitted by the cathode are combined into a bundle.
DK62942C
(en )
1944-11-27
Electric Discharge Tube, in which the Electrons unite into Bundles.
DK34912C
(en )
1925-08-24
Electric Discharge Tube with Glow Cathode, especially for use as a rectifier.
DK67324C
(en )
1948-08-02
Coupling with a discharge tube with bundled electron current, as well as discharge tube for use in the coupling.
DK60722C
(en )
1943-03-22
Method for Manufacturing Small, Tubular Cathodes for Electron Tubes.
DK56111C
(en )
1939-05-01
Electric Discharge Tube with Secondary Emission Electrode.
DK56600C
(en )
1939-08-28
Electric Discharge Tube with Secondary Emission Electrode.
CH216059A
(en )
1941-07-31
High current cathode for transmitter tubes.