Document Type and Number:
Japanese Patent JPS5622856
Kind Code:
U
Application Number:
JP10375679U
Publication Date:
February 28, 1981
Filing Date:
July 26, 1979
Export Citation:
International Classes:
H04M11/04; G08B19/00; G08B23/00; G08B25/08; H04M1/72; H04Q3/58; (IPC1-7): H04M1/72; G08B19/00; G08B23/00; H04M11/04