Document Type and Number:
Japanese Patent JPS5057435
Kind Code:
U
Application Number:
JP10522973U
Publication Date:
May 29, 1975
Filing Date:
September 10, 1973
Export Citation:
International Classes:
G03B27/62; G02F1/13; G03B13/04; G03B13/10; G03B13/24; G03B15/00; G03B17/20; G03B19/12; (IPC1-7): G03B13/04; G02F1/13