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H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/50—Thermionic-cathode tubes
H01J17/58—Thermionic-cathode tubes with more than one cathode or anode
Landscapes
Gas-Filled Discharge Tubes
(AREA)
Lasers
(AREA)
Vessels And Coating Films For Discharge Lamps
(AREA)
AT133059D1931-01-031931-12-12Zum Gleichrichten von Wechselstrom dienende Entladungsröhre mit einer Anode und zwei oder mehreren Kathoden.
AT133059B
(de)