Document Type and Number:
Japanese Patent JPS4738715
Kind Code:
Y1
Application Number:
JP4558068U
Publication Date:
November 22, 1972
Filing Date:
May 30, 1968
Export Citation:
International Classes:
G08B23/00; G08B5/00; G08B5/36; G08B25/00; H04Q9/00; (IPC1-7): H04Q9/00; G08B5/36; G08B23/00