Document Type and Number:
Japanese Patent JPS6237459
Kind Code:
B2
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Inventors:
NAGAYAMA HARUHIKO
Application Number:
JP15898177A
Publication Date:
August 12, 1987
Filing Date:
December 31, 1977
Export Citation:
Assignee:
RICOH KK
International Classes:
G11B5/80; G11B3/40; G11B17/025; G11B23/00; G11B23/44
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