Document Type and Number:
Japanese Patent JPS5254624
Kind Code:
U
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| JP3944859 | SPEAKER |
Application Number:
JP14326475U
Publication Date:
April 20, 1977
Filing Date:
October 17, 1975
Export Citation:
International Classes:
H04R7/20; H04R1/22; H04R7/18; (IPC1-7): H04R7/18; H04R1/22
Domestic Patent References:
| JPS5092235U | 1975-08-04 |