Document Type and Number:
Japanese Patent JPS5476662
Kind Code:
U
Application Number:
JP15116677U
Publication Date:
May 31, 1979
Filing Date:
November 11, 1977
Export Citation:
International Classes:
H01J23/12; H01J23/11; H01J23/14; H01J23/15; H01J25/50; (IPC1-7): H01J25/50; H01J23/11; H01J23/14