Top Inventors at Blackwelders All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Darryl G. Bettencourt | 6 |
| 2 | James E. Seiferling | 3 |
| 3 | Lewis W. Schmidt | 3 |
| #4 | Charles F. Dietz | 2 |
| #5 | Thomas S. Bettencourt | 2 |
| #6 | George Marshall | 1 |
| #7 | Akos I. Szoboszlay | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Darryl G. Bettencourt | 6 |
| 2 | James E. Seiferling | 3 |
| 3 | Lewis W. Schmidt | 3 |
| #4 | Charles F. Dietz | 2 |
| #5 | Thomas S. Bettencourt | 2 |
| #6 | George Marshall | 1 |
| #7 | Akos I. Szoboszlay | 1 |