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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS623811
Kind Code:
Y2
Application Number:
JP12547679U
Publication Date:
January 28, 1987
Filing Date:
September 11, 1979
Export Citation:
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International Classes:
G09B29/00; G06C3/00; (IPC1-7): G09B29/00; G06C3/00