Document Type and Number:
Japanese Patent JPS4979202
Kind Code:
U
Application Number:
JP12357572U
Publication Date:
July 09, 1974
Filing Date:
October 26, 1972
Export Citation:
International Classes:
H04S7/00; G09F9/00; H04R5/00; (IPC1-7): H04R5/00; G09F9/00