Document Type and Number:
Japanese Patent JPS56111475
Kind Code:
U
Application Number:
JP557980U
Publication Date:
August 28, 1981
Filing Date:
January 21, 1980
Export Citation:
International Classes:
G11B3/085; G11B3/095; G11B19/14; (IPC1-7): G11B17/06; G11B19/14