Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300425 | Coaxial-type electrical plug | — | 1989-03-28 |
| D300133 | Headphone | Takefumi Daidoh | 1989-03-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300425 | Coaxial-type electrical plug | — | 1989-03-28 |
| D300133 | Headphone | Takefumi Daidoh | 1989-03-07 |