Document Type and Number:
Japanese Patent JPS5239063
Kind Code:
U
Application Number:
JP12501475U
Publication Date:
March 19, 1977
Filing Date:
September 12, 1975
Export Citation:
International Classes:
H01J7/26; H01J23/00; H01J25/50; (IPC1-7): H01J7/26; H01J25/50