Document Type and Number:
Japanese Patent JPS5115786
Kind Code:
B2
Application Number:
JP7072971A
Publication Date:
May 19, 1976
Filing Date:
September 10, 1971
Export Citation:
International Classes:
G09B5/08; G09B5/04; G11B5/00; H04M11/00; (IPC1-7): G09B5/04; G11B5/033; H04M11/00