Document Type and Number:
Japanese Patent JPS6230008
Kind Code:
Y2
Application Number:
JP9207383U
Publication Date:
August 01, 1987
Filing Date:
June 17, 1983
Export Citation:
International Classes:
G02C3/04; G02B9/00; G02B25/00; (IPC1-7): G02C3/04; G02B25/00