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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS645344
Kind Code:
Y2
Application Number:
JP584682U
Publication Date:
February 09, 1989
Filing Date:
January 20, 1982
Export Citation:
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International Classes:
H01J7/24; H01J19/36; (IPC1-7): H01J19/36; H01J7/24