Document Type and Number:
Japanese Patent JPS5072168
Kind Code:
U
Application Number:
JP12668973U
Publication Date:
June 25, 1975
Filing Date:
November 01, 1973
Export Citation:
International Classes:
H01J29/89; H01J29/18; H01J29/86; (IPC1-7): H01J29/18; H01J29/86