Document Type and Number:
Japanese Patent JPS50142212
Kind Code:
A
Application Number:
JP4943374A
Publication Date:
November 15, 1975
Filing Date:
May 03, 1974
Export Citation:
International Classes:
G03B31/04; G11B5/09; G11B15/087; G11B20/10; G11B31/00; (IPC1-7): G11B5/09; G11B31/00