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TOHOKU PIONEER CORPORATION CORPORATION
Tendo-shi ,Yamagata, JP
| TOHOKU PIONEER CORPORATION CORPORATION Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090180648 | SPEAKER DEVICE AND SPEAKER UNIT - A simple structure will achieve dissipation of heat from the area inside a voice-coil bobbin and a diaphragm without a reduction in sound quality, in which a process for assembling a speaker device with high accuracy is performed in a simple operation. A speaker device comprises a recess-shaped frame | 07-16-2009 |