Document Type and Number:
Japanese Patent JPH02117763
Kind Code:
U
Application Number:
JP2575689U
Publication Date:
September 20, 1990
Filing Date:
March 07, 1989
Export Citation:
International Classes:
G11B20/10; G11B20/12; H04L7/08; (IPC1-7): G11B20/10; G11B20/12; H04L7/08