Document Type and Number:
Japanese Patent JPS5026335
Kind Code:
Y1
Application Number:
JP11047567U
Publication Date:
August 06, 1975
Filing Date:
December 30, 1967
Export Citation:
International Classes:
G03B31/00; G03B23/02; G11B23/44; (IPC1-7): G11B23/44; G03B23/02