Document Type and Number:
Japanese Patent JPS614910
Kind Code:
Y2
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Application Number:
JP14830279U
Publication Date:
February 15, 1986
Filing Date:
October 26, 1979
Export Citation:
International Classes:
G03B31/02; G03B31/00; G11B7/00; G11B7/003; (IPC1-7): G03B31/02; G11B7/00