Document Type and Number:
Japanese Patent JPS5455258
Kind Code:
U
Application Number:
JP12911277U
Publication Date:
April 17, 1979
Filing Date:
September 26, 1977
Export Citation:
International Classes:
H01J29/92; (IPC1-7): H01J29/92
Domestic Patent References:
| JPS5291753U | 1977-07-08 | |||
| JPS52112763U | 1977-08-26 |