Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812392 | Drumhead tensioning device and method | — | 2004-11-02 |
| 6667432 | Drumhead tensioning device and method | — | 2003-12-23 |
| 6441286 | Drumhead tensioning device and method | Jack D. Conner | 2002-08-27 |
| 6410833 | Drumhead tensioning device and method | — | 2002-06-25 |