Document Type and Number:
Japanese Patent JPS5120778
Kind Code:
Y1
Application Number:
JP3478675U
Publication Date:
May 29, 1976
Filing Date:
March 15, 1975
Export Citation:
International Classes:
G03B31/04; G03B31/00; G11B15/46; G11B31/00; (IPC1-7): G03B31/00; G11B15/46