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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS55108651
Kind Code:
U
Application Number:
JP665879U
Publication Date:
July 30, 1980
Filing Date:
January 24, 1979
Export Citation:
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International Classes:
H01J31/38; H01J29/86; H01J29/89; (IPC1-7): H01J29/89; H01J31/38