Document Type and Number:
Japanese Patent JPS5241842
Kind Code:
Y2
Application Number:
JP9843372U
Publication Date:
September 22, 1977
Filing Date:
August 25, 1972
Export Citation:
International Classes:
G11B15/43; G11B15/18; G11B15/30; G11B15/66; G11B15/665; (IPC1-7): G11B15/66; G11B15/18; G11B15/43