Evacuation tip 1970-01-01
Extended interaction oscillator 1970-01-01
Field emission gun 1970-01-01
Field emitter array 1970-01-01
Fleming valve 1970-01-01
GU-50 1970-01-01
Getter 1970-01-01
Glowing plate 1970-01-01
Grid-leak detector 1970-01-01
Grid dip oscillator 1970-01-01
Gyrotron 1970-01-01
HT (vacuum tube) 1970-01-01
Hot cathode 1970-01-01
Image intensifier 1970-01-01
Inductive output tube 1970-01-01
JJ Electronic 1970-01-01
KT66 1970-01-01
KT88 1970-01-01
KT90 1970-01-01
Klystron 1970-01-01