Document Type and Number:
Japanese Patent JPS5210757
Kind Code:
U
Application Number:
JP9698175U
Publication Date:
January 25, 1977
Filing Date:
July 11, 1975
Export Citation:
International Classes:
H01J23/04; H01J1/15; H01J25/50; (IPC1-7): H01J1/15; H01J25/50
Domestic Patent References:
| JPS4734829U | 1972-12-18 |