Document Type and Number:
Japanese Patent JPS5133432
Kind Code:
U
Application Number:
JP10533074U
Publication Date:
March 11, 1976
Filing Date:
September 03, 1974
Export Citation:
International Classes:
G03B17/56; G03B17/00; G03B17/50; G03B31/00; (IPC1-7): G03B31/00; G03B17/00; G03B17/50