Document Type and Number:
Japanese Patent JPS6421957
Kind Code:
U
Application Number:
JP11700187U
Publication Date:
February 03, 1989
Filing Date:
July 30, 1987
Export Citation:
International Classes:
G02F1/133; G02F1/1335; G09F9/00; H01J61/30; H01J61/52; (IPC1-7): H01J61/30; G02F1/133; G09F9/00