Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7633000 | U-joint for double pedal | Michael Dorfman, George Szwaya | 2009-12-15 |
| 7456351 | Drum pedal | Michael Dorfman, George Szwaya | 2008-11-25 |
| 7211720 | Adjustable bass drum beater | Michael Dorfman, George Szwaya | 2007-05-01 |
| 6846978 | Strainer for a drum | Michael Dorfman, George Szwaya | 2005-01-25 |