Document Type and Number:
Japanese Patent JPS5222235
Kind Code:
B2
Application Number:
JP10453072A
Publication Date:
June 16, 1977
Filing Date:
October 20, 1972
Export Citation:
International Classes:
G08B1/08; G08B9/00; G09G3/00; H03K5/00; H04B14/02; H04L25/38