Document Type and Number:
Japanese Patent JPS5118753
Kind Code:
Y2
Application Number:
JP12209871U
Publication Date:
May 18, 1976
Filing Date:
December 22, 1971
Export Citation:
International Classes:
G11B21/08; G11B21/02; G11B21/04; G11B21/12; (IPC1-7): G11B21/12