Document Type and Number:
Japanese Patent JPS53163121
Kind Code:
U
Application Number:
JP6832277U
Publication Date:
December 20, 1978
Filing Date:
May 27, 1977
Export Citation:
International Classes:
H04R9/02; H04R1/24; H04R9/06; (IPC1-7): H04R9/02; H04R9/06