Document Type and Number:
Japanese Patent JPS49137543
Kind Code:
U
Application Number:
JP3500873U
Publication Date:
November 27, 1974
Filing Date:
March 24, 1973
Export Citation:
International Classes:
G03B27/62; G03B27/14; G03G15/00; G03G15/04; (IPC1-7): G03B27/62; G03B27/14; G03G15/04