Document Type and Number:
Japanese Patent JPS5734531
Kind Code:
Y2
Application Number:
JP5697776U
Publication Date:
July 30, 1982
Filing Date:
May 06, 1976
Export Citation:
International Classes:
G09B29/14; G04B19/22; G06C3/00; (IPC1-7): G09B29/14; G04B19/22; G06C3/00