Document Type and Number:
Japanese Patent JPS4881821
Kind Code:
U
Application Number:
JP43057271U
Publication Date:
October 05, 1973
Filing Date:
December 29, 1971
Export Citation:
International Classes:
G11B15/02; G11B27/36; G11B33/10; (IPC1-7): G11B27/18; G11B27/36