Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D513249 | Headphone | Maki Hirakawa, Michio Deguchi | 2005-12-27 |
| D512417 | Noise canceller | Maki Hirakawa, Michio Deguchi | 2005-12-06 |
| D511769 | Holder for headphone | Maki Hirakawa, Michio Deguchi | 2005-11-22 |
| D510086 | Holder for headphone | Maki Hirakawa, Michio Deguchi | 2005-09-27 |