Document Type and Number:
Japanese Patent JPS57115785
Kind Code:
U
Application Number:
JP140281U
Publication Date:
July 17, 1982
Filing Date:
January 08, 1981
Export Citation:
International Classes:
H04R1/00; F16F15/06; G03B31/00; H01Q1/12; (IPC1-7): H04R1/00; G03B31/00; H01Q1/12