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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5611140
Kind Code:
Y2
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Application Number:
JP5561378U
Publication Date:
March 13, 1981
Filing Date:
April 26, 1978
Export Citation:
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International Classes:
G09B29/14; G06C3/00; G09D1/00; (IPC1-7): G06C3/00; G09D1/00