Document Type and Number:
Japanese Patent JPS5425061
Kind Code:
U
Application Number:
JP9850377U
Publication Date:
February 19, 1979
Filing Date:
July 22, 1977
Export Citation:
International Classes:
H01J23/12; H01J23/40; H01J25/10; (IPC1-7): H01J23/12; H01J25/10