CH314129A
(en )
1956-05-31
Cathode bodies for electric discharge tubes
CH319033A
(en )
1957-01-31
Cathode for an electric discharge tube
CH314776A
(en )
1956-06-30
Cathode bodies for electric discharge tubes
CH305872A
(en )
1955-03-15
Cathode for electrical discharge vessels.
CH315203A
(en )
1956-07-31
Cathode for electrical discharge vessels
CH314128A
(en )
1956-05-31
Activated electrode for electrical discharge vessels
AT178402B
(en )
1954-05-10
Oxide cathode for electric discharge tubes
CH314200A
(en )
1956-05-31
Oxide cathode for electric discharge tubes
CH312426A
(en )
1955-12-31
Electric discharge tube.
CH345392A
(en )
1960-03-31
Cathode body for an electric discharge tube
AT171917B
(en )
1952-07-25
Indirect heated cathode for electrical discharge tubes
AT177844B
(en )
1954-03-10
Cathode bodies for electric discharge tubes
AT178147B
(en )
1954-04-10
Cathode for electric discharge tubes with an operating temperature exceeding 1000 ° C
CH293278A
(en )
1953-09-15
Electric discharge tube.
CH290128A
(en )
1953-04-15
Electrode for low-pressure electric discharge tubes.
AT176614B
(en )
1953-11-10
Electric discharge tube
AT167787B
(en )
1951-02-26
Electrode for electric discharge tubes
AT177845B
(en )
1954-03-10
Cathode bodies for electric discharge tubes
CH312786A
(en )
1956-02-29
Cathode for electrical discharge vessels
CH305546A
(en )
1955-02-28
Cathode for electrical discharge vessels.
AT187993B
(en )
1956-12-10
Cathode body for an electric discharge tube
AT169977B
(en )
1951-12-27
Fluorescent material, preferably for an electric discharge tube
DK82120C
(en )
1957-02-18
Electric discharge tube with oxide cathode.
CH291654A
(en )
1953-06-30
Electric discharge tube.
AT176268B
(en )
1953-10-10
Electric discharge tube