Document Type and Number:
Japanese Patent JPS5496147
Kind Code:
U
Application Number:
JP17050577U
Publication Date:
July 07, 1979
Filing Date:
December 16, 1977
Export Citation:
International Classes:
H01J1/46; H01J29/02; H01J31/15; (IPC1-7): H01J29/02; H01J1/46
Domestic Patent References:
| JPS5118467A | 1976-02-14 |