Document Type and Number:
Japanese Patent JPS5449817
Kind Code:
U
Application Number:
JP12402877U
Publication Date:
April 06, 1979
Filing Date:
September 13, 1977
Export Citation:
International Classes:
H04N5/00; H04Q9/02; H04Q9/16; (IPC1-7): H04N5/00; H04N5/48; H04Q9/02