Document Type and Number:
Japanese Patent JPS5326972
Kind Code:
Y2
Application Number:
JP12068572U
Publication Date:
July 08, 1978
Filing Date:
October 19, 1972
Export Citation:
International Classes:
G03B31/00; G11B23/42; G11B27/15; G11B31/00; (IPC1-7): G11B27/14