Document Type and Number:
Japanese Patent JPS54156517
Kind Code:
U
Application Number:
JP5424878U
Publication Date:
October 31, 1979
Filing Date:
April 24, 1978
Export Citation:
International Classes:
H04R7/02; H04R1/02; H04R1/22; H04R1/26; H04R7/04; (IPC1-7): H04R1/26; H04R1/02; H04R7/02