Document Type and Number:
Japanese Patent JPS55179488
Kind Code:
U
Application Number:
JP7931679U
Publication Date:
December 23, 1980
Filing Date:
June 11, 1979
Export Citation:
International Classes:
H04R3/00; G10H3/14; G10H3/18; H04R11/04; H04R13/00; (IPC1-7): H04R3/00; H04R11/04