Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10163426 | Bass drum damper and bass drum | — | 2018-12-25 |
| 10043499 | Percussion instrument, drumhead for percussion instrument, mold for manufacture of drumhead, and manufacturing method of drumhead | HIKARU YASUNO | 2018-08-07 |