Document Type and Number:
Japanese Patent JPS6322605
Kind Code:
Y2
Application Number:
JP5505680U
Publication Date:
June 21, 1988
Filing Date:
April 22, 1980
Export Citation:
International Classes:
H01J29/00; H01J7/26; H01J29/86; H01J29/89; H01J31/10; (IPC1-7): H01J7/26; H01J29/89