Document Type and Number:
Japanese Patent JPS5526886
Kind Code:
Y2
Application Number:
JP3448077U
Publication Date:
June 27, 1980
Filing Date:
March 22, 1977
Export Citation:
International Classes:
G02C3/00; G02C5/14; G02C5/22; G02C11/00; (IPC1-7): G02C11/00; G02C3/00; G02C5/14