Document Type and Number:
Japanese Patent JPS55133693
Kind Code:
U
Application Number:
JP3217179U
Publication Date:
September 22, 1980
Filing Date:
March 12, 1979
Export Citation:
International Classes:
H04R9/00; H04R9/04; H05K1/14; H05K3/36; (IPC1-7): H04R9/00; H04R9/04; H05K3/36