Document Type and Number:
Japanese Patent JPS5522625
Kind Code:
Y2
Application Number:
JP12171574U
Publication Date:
May 29, 1980
Filing Date:
October 07, 1974
Export Citation:
International Classes:
G03B23/02; G11B15/02; G11B15/07; G11B15/66; G11B15/675; G11B23/08; G11B23/26; G11B23/28; (IPC1-7): G11B23/28; G11B15/02; G11B15/66