Document Type and Number:
Japanese Patent JPS56103921
Kind Code:
U
Application Number:
JP126980U
Publication Date:
August 14, 1981
Filing Date:
January 10, 1980
Export Citation:
International Classes:
G11B20/02; G11B5/027; G11B15/10; (IPC1-7): G11B5/027; G11B15/10