Document Type and Number:
Japanese Patent JPS5443698
Kind Code:
Y2
Application Number:
JP16142975U
Publication Date:
December 17, 1979
Filing Date:
November 28, 1975
Export Citation:
International Classes:
G12B9/04; G11B33/02; G12B9/00; (IPC1-7): G11B1/00; G12B9/00