Document Type and Number:
Japanese Patent JPS5486943
Kind Code:
U
Application Number:
JP15982777U
Publication Date:
June 20, 1979
Filing Date:
November 29, 1977
Export Citation:
International Classes:
H01J7/18; H01J25/50; (IPC1-7): H01J25/50; H01J7/18
Domestic Patent References:
| JPS50114163A | 1975-09-06 | |||
| JPS3631251Y1 | ||||
| JPS3718061Y1 | ||||
| JP51055260B |