Document Type and Number:
Japanese Patent JPS524828
Kind Code:
U
Application Number:
JP8926275U
Publication Date:
January 13, 1977
Filing Date:
June 24, 1975
Export Citation:
International Classes:
G03B23/02; G11B23/00; G11B23/107; (IPC1-7): G03B23/02; G11B23/00
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