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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5257274
Kind Code:
Y2
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Application Number:
JP4165175U
Publication Date:
December 24, 1977
Filing Date:
March 28, 1975
Export Citation:
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International Classes:
D06F71/00; D06F71/18; D06F73/00; (IPC1-7): D06F71/18