Document Type and Number:
Japanese Patent JPS5642930
Kind Code:
Y2
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Application Number:
JP14542073U
Publication Date:
October 07, 1981
Filing Date:
December 17, 1973
Export Citation:
International Classes:
H01J7/24; H01J19/74; H01J23/00; H01J23/10; H01J23/12; (IPC1-7): H01J19/74; H01J23/12