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
CH315203A
(en )
1956-07-31
Cathode for electrical discharge vessels
CH305872A
(en )
1955-03-15
Cathode for electrical discharge vessels.
CH344139A
(en )
1960-01-31
Supply cathode for electric discharge tubes
CH314128A
(en )
1956-05-31
Activated electrode for electrical discharge vessels
CH312408A
(en )
1955-12-31
Contact arrangement for electrical switching devices.
CH312786A
(en )
1956-02-29
Cathode for electrical discharge vessels
CH312426A
(en )
1955-12-31
Electric discharge tube.
CH320913A
(en )
1957-04-15
Cathode for electrical discharge vessels
AT198374B
(en )
1958-06-25
Switching arrangement for electric discharge tubes
AT181333B
(en )
1955-03-10
Cathode for electrical discharge vessels
AT187203B
(en )
1956-10-25
Cathode for electrical discharge vessels
CH305546A
(en )
1955-02-28
Cathode for electrical discharge vessels.
AT177844B
(en )
1954-03-10
Cathode bodies for electric discharge tubes
AT175317B
(en )
1953-06-25
Cathode for electrical discharge vessels
AT174992B
(en )
1953-05-26
Cathode for electrical discharge vessels
AT177842B
(en )
1954-03-10
Cathode for electrical discharge vessels
AT177843B
(en )
1954-03-10
Cathode for electrical discharge vessels
CH318309A
(en )
1956-12-31
Cathode
CH319769A
(en )
1957-02-28
Electrode for discharge vessels
CH309312A
(en )
1955-08-31
Cathode for electrical discharge vessels.
CH308672A
(en )
1955-07-31
Cathode for electrical discharge vessels.
AT177845B
(en )
1954-03-10
Cathode bodies for electric discharge tubes