Document Type and Number:
Japanese Patent JPS4950863
Kind Code:
A
Abstract:
A non-thermionic electron emissive tube of the type comprising an evacuated envelope, an electron emissive cathode assembly in the envelope, and a collector anode for electrons emitted from the emissive layer. The cathode assembly comprises a thin ceramic substrate. On one face of the substrate is a non-thermionic cathode. On the opposite surface is a heater pattern of resistive metallizing.
Application Number:
JP5454373A
Publication Date:
May 17, 1974
Filing Date:
May 16, 1973
Export Citation:
International Classes:
H01J1/30; H01J43/20; H01J1/308; H01J1/32; H01J1/34; H01J40/06; H01J43/08; (IPC1-7): H01J39/02
Domestic Patent References:
| JP42011001A | ||||
| JP42025681A |
Foreign References:
| US3307974A | 1967-03-07 |