Document Type and Number:
Japanese Patent JPS54121781
Kind Code:
U
Application Number:
JP1711578U
Publication Date:
August 25, 1979
Filing Date:
February 15, 1978
Export Citation:
International Classes:
G09F9/00; G02F1/13; G02F1/1335; (IPC1-7): G09F9/00; G02F1/13