Document Type and Number:
Japanese Patent JPS49134384
Kind Code:
A
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Application Number:
JP11222873A
Publication Date:
December 24, 1974
Filing Date:
October 05, 1973
Export Citation:
International Classes:
H01J43/24; G01J1/42; G02B6/42; H01J40/06; H01J43/04; (IPC1-7): H01J39/02