Document Type and Number:
Japanese Patent JPS5156952
Kind Code:
U
Application Number:
JP13098774U
Publication Date:
May 04, 1976
Filing Date:
October 29, 1974
Export Citation:
International Classes:
H01J29/04; H01J1/22; H01J29/50; (IPC1-7): H01J29/50; H01J1/22