The portions of the drawings shown in broken or phantom lines, including the paddle and resistance mechanism shown in
The portions of the drawings shown in broken or phantom lines, including the paddle and resistance mechanism shown in
| Number | Name | Date | Kind |
|---|---|---|---|
| 4469325 | Ware | Sep 1984 | A |
| 4743011 | Coffey | May 1988 | A |
| 4940227 | Coffey | Jul 1990 | A |
| 5441469 | Chern | Aug 1995 | A |
| 6106436 | Lundahl | Aug 2000 | A |
| 6328677 | Drapeau | Dec 2001 | B1 |
| 7731637 | D'Eredita | Jun 2010 | B2 |
| 7833136 | Bell | Nov 2010 | B2 |
| 7862484 | Coffey | Jan 2011 | B1 |