Document Type and Number:
Japanese Patent JPS5218086
Kind Code:
Y2
Application Number:
JP13936572U
Publication Date:
April 23, 1977
Filing Date:
December 04, 1972
Export Citation:
International Classes:
G11B5/80; G03B21/64; G03B31/04; G03B31/06; G11B5/74; G11B23/44; G11B25/04; G11B31/00; (IPC1-7): G11B5/74; G03B31/04; G11B23/44