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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5321043
Kind Code:
Y2
Application Number:
JP266473U
Publication Date:
June 02, 1978
Filing Date:
December 25, 1972
Export Citation:
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International Classes:
G03B31/00; G11B15/04; G11B15/10; G11B15/29; G11B15/44; (IPC1-7): G11B15/44; G11B15/29