Document Type and Number:
Japanese Patent JPS495409
Kind Code:
U
Application Number:
JP4438372U
Publication Date:
January 18, 1974
Filing Date:
April 17, 1972
Export Citation:
International Classes:
G03B31/04; G03B31/00; G11B31/00; (IPC1-7): G03B31/00
Next Patent: JPS495410