CH301197A
(en )
1954-08-31
Cathode.
FR1196843A
(en )
1959-11-26
Klystron-type electron tube
DK76364C
(en )
1953-09-14
Electric discharge tube with an external anode and at least two grids.
FR1068124A
(en )
1954-06-22
Electron tube cathode
FR1060976A
(en )
1954-04-07
Thermionic cathode
CH293278A
(en )
1953-09-15
Electric discharge tube.
AT176614B
(en )
1953-11-10
Electric discharge tube
DK82120C
(en )
1957-02-18
Electric discharge tube with oxide cathode.
NL153379B
(en )
FUEL CELL ELECTRODE.
CH298666A
(en )
1954-05-15
Electric discharge tube with outer anode and zirconium trap.
DK86032C
(en )
1958-08-11
Electric discharge tube with cage-shaped cathode.
FR1033986A
(en )
1953-07-17
Thermoelectronic cathode
CH291654A
(en )
1953-06-30
Electric discharge tube.
DK81863C
(en )
1956-09-24
Electron tube with wire-shaped cathode.
FR1016586A
(en )
1952-11-17
Improvements to cathode ray tubes
FR1007587A
(en )
1952-05-07
Receiving cathode ray tubes
DK89820C
(en )
1960-10-10
Electric lamp or discharge tube with a contact-bearing plate attached to its end part.
AT174679B
(en )
1953-04-25
Electric discharge tube with flat electrodes
BE504796A
(en )
1952-11-21
ELECTRICAL DISCHARGE AND COLD CATHODE TUBES.
DK71474C
(en )
1950-09-11
Electric discharge tube with a pierced anode and a secondary emission electrode.
DK77999C
(en )
1954-08-23
Electron tubes with flat electrodes.
DK67689C
(en )
1948-09-27
Electric discharge tube with spacers between two successive grids.
ES27543Y
(en )
1952-01-16
Cathode
DK68633C
(en )
1949-02-28
Electric discharge tube with a catch grid in front of the anode.
DK80289C
(en )
1955-12-19
X-ray tube with liquid-cooled anode.