Document Type and Number:
Japanese Patent JPS5372471
Kind Code:
U
Application Number:
JP13991577U
Publication Date:
June 17, 1978
Filing Date:
October 20, 1977
Export Citation:
International Classes:
H01J11/50; (IPC1-7): H01J17/20; H01J11/02
Domestic Patent References:
| JPS4925626A | 1974-03-07 |