Document Type and Number:
Japanese Patent JPS52145881
Kind Code:
U
Application Number:
JP5556476U
Publication Date:
November 05, 1977
Filing Date:
April 28, 1976
Export Citation:
International Classes:
G06C3/00; G06F15/02; G09F9/00; G09F13/00; (IPC1-7): G09F13/00; G06C3/00