Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8168873 | Drum support structure | — | 2012-05-01 |
| 7652206 | Drum and manufacturing method of cylinder thereof | — | 2010-01-26 |
| 7312389 | Snare strainer | — | 2007-12-25 |
| 6849793 | Drum acoustic wire assembly and a drum using the same | Tomio Okamoto | 2005-02-01 |