Document Type and Number:
Japanese Patent JPS6235080
Kind Code:
Y2
More Like This:
Application Number:
JP7412481U
Publication Date:
September 07, 1987
Filing Date:
May 22, 1981
Export Citation:
International Classes:
G03B17/24; G03B31/00; (IPC1-7): G03B17/24; G03B31/00