Document Type and Number:
Japanese Patent JPS4731532
Kind Code:
U
Application Number:
JP3154771U
Publication Date:
December 09, 1972
Filing Date:
April 23, 1971
Export Citation:
International Classes:
G11B23/087; G11B5/11; G11B23/04; G11B23/08; (IPC1-7): G11B23/04; G11B23/08