Document Type and Number:
Japanese Patent JPS5727575
Kind Code:
B2
Application Number:
JP235372A
Publication Date:
June 11, 1982
Filing Date:
December 30, 1971
Export Citation:
International Classes:
H01J29/28; H01J29/81; H01J31/20; (IPC1-7): H01J29/80; H01J29/28
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