Document Type and Number:
Japanese Patent JPS4816965
Kind Code:
Y1
Application Number:
JP7716769U
Publication Date:
May 15, 1973
Filing Date:
August 13, 1969
Export Citation:
International Classes:
G11B15/02; G11B15/22; G11B15/66; G11B15/675; (IPC1-7): G11B15/66; G11B15/02; G11B15/22