Document Type and Number:
Japanese Patent JPS5423237
Kind Code:
Y2
Application Number:
JP7455475U
Publication Date:
August 10, 1979
Filing Date:
June 02, 1975
Export Citation:
International Classes:
G03B23/04; G03B23/00; G06F17/30; G06K19/063; G06K21/00; (IPC1-7): G06K21/00; G03B23/00; G06F15/40