Document Type and Number:
Japanese Patent JPS5616032
Kind Code:
Y2
Application Number:
JP15774675U
Publication Date:
April 15, 1981
Filing Date:
November 20, 1975
Export Citation:
International Classes:
H01J9/385; H01J7/14; H01J9/38; H01J9/46; (IPC1-7): H01J9/38