Document Type and Number:
Japanese Patent JPS5277721
Kind Code:
U
Application Number:
JP16588875U
Publication Date:
June 10, 1977
Filing Date:
December 08, 1975
Export Citation:
International Classes:
G11B15/675; G11B15/18; G11B15/66; (IPC1-7): G11B15/18; G11B15/66