Document Type and Number:
Japanese Patent JPS56145197
Kind Code:
U
Application Number:
JP4245380U
Publication Date:
November 02, 1981
Filing Date:
March 31, 1980
Export Citation:
International Classes:
H04R9/02; H04R1/22; H04R9/06; (IPC1-7): H04R9/02; H04R1/22; H04R9/06