Document Type and Number:
Japanese Patent JPS56103923
Kind Code:
U
Application Number:
JP18394179U
Publication Date:
August 14, 1981
Filing Date:
December 28, 1979
Export Citation:
International Classes:
H03M5/12; G11B5/09; G11B20/14; H03M5/14; H04L25/49; (IPC1-7): G11B5/09; H04L25/49