Document Type and Number:
Japanese Patent JPS51138061
Kind Code:
U
Application Number:
JP5813375U
Publication Date:
November 08, 1976
Filing Date:
April 28, 1975
Export Citation:
International Classes:
H01J25/50; H01J23/14; (IPC1-7): H01J23/14; H01J25/50
Domestic Patent References:
| JPS487670A | ||||
| JP38001833A |
Foreign References:
| US3173048A | 1965-03-09 |