Document Type and Number:
Japanese Patent JPS5471922
Kind Code:
U
Application Number:
JP14498477U
Publication Date:
May 22, 1979
Filing Date:
October 31, 1977
Export Citation:
International Classes:
H01J29/76; (IPC1-7): H01J29/76
Domestic Patent References:
| JP49146824B | ||||
| JPS489013B1 | ||||
| JPS4938764U | 1974-04-05 |