Document Type and Number:
Japanese Patent JPS54156518
Kind Code:
U
Application Number:
JP5436078U
Publication Date:
October 31, 1979
Filing Date:
April 24, 1978
Export Citation:
International Classes:
H04R9/00; (IPC1-7): H04R9/00
Domestic Patent References:
| JP51103932B | ||||
| JP50113432B | ||||
| JP51163931B |