Document Type and Number:
Japanese Patent JPS5342052
Kind Code:
Y1
Application Number:
JP3248268U
Publication Date:
October 11, 1978
Filing Date:
April 22, 1968
Export Citation:
International Classes:
H01J23/20; H01J23/22; H01J25/50; (IPC1-7): H01J23/22; H01J25/50