Document Type and Number:
Japanese Patent JPH03121561
Kind Code:
U
Application Number:
JP3073090U
Publication Date:
December 12, 1991
Filing Date:
March 26, 1990
Export Citation:
International Classes:
G11B20/10; G11B19/02; G11B20/12; G11B27/10; (IPC1-7): G11B20/12; G11B19/02; G11B20/10; G11B27/10