Document Type and Number:
Japanese Patent JPH047552
Kind Code:
Y2
Application Number:
JP8025285U
Publication Date:
February 27, 1992
Filing Date:
May 29, 1985
Export Citation:
International Classes:
H01J23/00; H01J7/24; H01J23/033; H01J23/10; H01J23/12; (IPC1-7): H01J23/12; H01J23/00; H01J23/033
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