Document Type and Number:
Japanese Patent JPS52438
Kind Code:
Y1
Application Number:
JP1129869U
Publication Date:
January 07, 1977
Filing Date:
February 12, 1969
Export Citation:
International Classes:
H01J5/02; H01J5/22; H01J23/40; H01J25/50; (IPC1-7): H01J5/22; H01J25/50
Next Patent: JPH052439