Document Type and Number:
Japanese Patent JPS5441704
Kind Code:
Y2
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Application Number:
JP6599274U
Publication Date:
December 05, 1979
Filing Date:
June 07, 1974
Export Citation:
International Classes:
G03B23/02; G11B15/22; G11B23/08; G11B23/087; (IPC1-7): G11B23/08