Document Type and Number:
Japanese Patent JPS4937031
Kind Code:
Y1
Application Number:
JP4825065U
Publication Date:
October 09, 1974
Filing Date:
June 14, 1965
Export Citation:
International Classes:
G03B31/06; G03B31/00; H04Q9/00; (IPC1-7): H04Q9/00; G03B31/00