AT134016B
(en )
1933-07-10
Electric discharge tube.
DK48297C
(en )
1934-01-22
Indirectly heated Glow Cathode for Discharge Tube.
DK47725C
(en )
1933-09-04
Indirectly heated Glow Cathode for Discharge Tube.
CH175464A
(en )
1935-02-28
Discharge tube.
DK49779C
(en )
1935-01-21
Indirectly Heated Cathode for Discharge Pipe.
AT134419B
(en )
1933-08-10
Electron tube with hot cathode.
GR3494B
(en )
1932-01-21
INDIRECTLY HEATED DOWN THROUGH DISCHARGE PIPE.
CH151059A
(en )
1931-11-30
Hot cathode x-ray tube.
DK51100C
(en )
1935-12-30
Indirectly Heated Cathode for Electric Discharge Pipes.
DK51109C
(en )
1935-12-30
Indirectly Heated Cathode for Electric Discharge Pipes.
DK44739C
(en )
1931-10-26
Discharge tube with resiliently supported glow cathode.
AT136565B
(en )
1934-02-26
Discharge tube with indirectly heated cathode.
DK41386C
(en )
1929-12-30
Discharge tube with Glow cathode.
DK46634C
(en )
1932-12-19
Electron tube with indirectly heated Emission cathode.
DK45307C
(en )
1932-02-29
Electric Discharge Tube with an Indirect Heated Cathode.
DK34481C
(en )
1925-05-04
Discharge tube with Glow cathode.
DK47696C
(en )
1933-08-28
Electron discharge tube.
DK47074C
(en )
1933-03-13
Procedure for Increasing Heat Radiation from Electrodes in Discharge Pipes.
FR731114A
(en )
1932-08-27
Discharge tube
DK37044C
(en )
1927-01-24
Termion tube with several Glow cathodes.
AT140665B
(en )
1935-02-25
Electric discharge tube.
DK51943C
(en )
1936-07-27
Electrode Support for Discharge Tubes.
DK50885C
(en )
1935-11-11
Electrode system for discharge pipes.
AT140788B
(en )
1935-02-25
Indirectly heated cathode.
DK37332C
(en )
1927-04-11
X-ray tube with glow cathode.