Document Type and Number:
Japanese Patent JPS5175421
Kind Code:
A
Inventors:
MACHIDA MASAHIKO
Application Number:
JP386675A
Publication Date:
June 30, 1976
Filing Date:
December 25, 1974
Export Citation:
Assignee:
SONY CORP
International Classes:
H03M13/00; G11B20/12; H04B1/00; H04B15/00; (IPC1-7): G11B5/06; H04B1/00