Document Type and Number:
Japanese Patent JPS546861
Kind Code:
B1
Application Number:
JP9681669A
Publication Date:
April 02, 1979
Filing Date:
December 04, 1969
Export Citation:
International Classes:
H01J23/20; H01J9/14; H01J25/50; H01J25/58; (IPC1-7): H01J25/58; H01J9/14
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