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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4311008
Kind Code:
Y1
Application Number:
JP2449565U
Publication Date:
May 13, 1968
Filing Date:
March 30, 1965
Export Citation:
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International Classes:
G03B31/00; G11B15/22; (IPC1-7): G03B31/00; G11B15/22