Document Type and Number:
Japanese Patent JPS57144133
Kind Code:
U
Application Number:
JP3204081U
Publication Date:
September 10, 1982
Filing Date:
March 04, 1981
Export Citation:
International Classes:
G06C3/00; G09F7/22; G09F11/23; (IPC1-7): G06C3/00; G09F7/22