Document Type and Number:
Japanese Patent JPS5648192
Kind Code:
U
Application Number:
JP13061479U
Publication Date:
April 28, 1981
Filing Date:
September 20, 1979
Export Citation:
International Classes:
H04R1/28; H04R1/10; H04R9/06; (IPC1-7): H04R1/28; H04R1/10; H04R9/06
Domestic Patent References:
| JPS53129022U | 1978-10-13 |