Document Type and Number:
Japanese Patent JPS4815378
Kind Code:
Y1
Application Number:
JP2716569U
Publication Date:
April 27, 1973
Filing Date:
March 28, 1969
Export Citation:
International Classes:
H01J29/54; H01J31/20; H04N9/28; (IPC1-7): H01J29/54; H01J31/20; H04N9/28