Document Type and Number:
Japanese Patent JPS50115466
Kind Code:
A
Application Number:
JP2015374A
Publication Date:
September 10, 1975
Filing Date:
February 20, 1974
Export Citation:
International Classes:
H01J40/06; H01J9/12; (IPC1-7): H01J9/12
Domestic Patent References:
| JPS4880271A | 1973-10-27 | |||
| JPS4911460A | 1974-01-31 |