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
CH340280A
(en )
1959-08-15
Electric discharge tube with a directly heatable cathode
CH250761A
(en )
1947-09-15
Electric discharge tube with artificially cooled anode.
CH239640A
(en )
1945-10-31
Electric discharge tube with secondary emission electrode.
CH312426A
(en )
1955-12-31
Electric discharge tube.
CH318310A
(en )
1956-12-31
Electric discharge tube with a cathode containing a supply of alkaline earth metal compounds
AT180996B
(en )
1955-02-10
Electric discharge tube with an oxide cathode
CH304168A
(en )
1954-12-31
Electric discharge tube with a metallic wall layer.
AT178147B
(en )
1954-04-10
Cathode for electric discharge tubes with an operating temperature exceeding 1000 ° C
DK82120C
(en )
1957-02-18
Electric discharge tube with oxide cathode.
CH293278A
(en )
1953-09-15
Electric discharge tube.
AT176614B
(en )
1953-11-10
Electric discharge tube
AT177844B
(en )
1954-03-10
Cathode bodies for electric discharge tubes
CH312786A
(en )
1956-02-29
Cathode for electrical discharge vessels
DE1700107U
(en )
1955-06-08
ELECTRIC DISCHARGE TUBE WITH INDIRECTLY HEATABLE CATHODE.
AT174679B
(en )
1953-04-25
Electric discharge tube with flat electrodes
AT177835B
(en )
1954-03-10
Electric discharge tube
AT180337B
(en )
1954-11-25
Electric discharge tube
CH323149A
(en )
1957-07-15
Electric discharge tube
AT181000B
(en )
1955-02-10
Electric discharge tube with gold-plated contact elements
AT178402B
(en )
1954-05-10
Oxide cathode for electric discharge tubes
CH269933A
(en )
1950-07-31
Electric discharge tube with an indirectly heated cathode.
CH298666A
(en )
1954-05-15
Electric discharge tube with outer anode and zirconium trap.