Document Type and Number:
Japanese Patent JPS51137990
Kind Code:
U
More Like This:
Application Number:
JP5119076U
Publication Date:
November 08, 1976
Filing Date:
April 21, 1976
Export Citation:
International Classes:
H01J61/24; H01J61/067; H01J61/28; (IPC1-7): H01J61/067
Domestic Patent References:
JPS4920971A | 1974-02-23 | |||
JPS5016380A | 1975-02-20 |
Foreign References:
US3548241A | 1970-12-15 |