Document Type and Number:
Japanese Patent JPH0224205
Kind Code:
Y2
Application Number:
JP11857583U
Publication Date:
July 03, 1990
Filing Date:
August 01, 1983
Export Citation:
International Classes:
H01J31/15; H01J7/14; H01J9/40; H01J17/16; H01J29/86; (IPC1-7): H01J29/86; H01J9/40