Document Type and Number:
Japanese Patent JPS5190820
Kind Code:
U
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Application Number:
JP847575U
Publication Date:
July 21, 1976
Filing Date:
January 18, 1975
Export Citation:
International Classes:
G03B23/02; G11B23/08; G11B23/28; (IPC1-7): G11B23/08; G03B23/02; G11B23/28