Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D524299 | Speaker for an automobile | Keiji Ishikawa | 2006-07-04 |
| D523849 | Speaker for an automobile | Keiji Ishikawa | 2006-06-27 |
| D523422 | Speaker for an automobile | Keiji Ishikawa | 2006-06-20 |