Document Type and Number:
Japanese Patent JPS5491815
Kind Code:
U
Application Number:
JP16732077U
Publication Date:
June 29, 1979
Filing Date:
December 12, 1977
Export Citation:
International Classes:
G11B5/127; G11B5/147; G11B5/17; (IPC1-7): G11B5/12; G11B5/20