Top Inventors at Duncan Industries Parking Control Systems All Time
Showing 1–11 of 11 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Ralph H. Carmen | 9 |
| 2 | Joseph H. Sutton | 4 |
| 3 | James M. Rodgers | 3 |
| 3 | John W. Van Horn | 3 |
| #5 | Clyde T. Johnson | 1 |
| #5 | Gorm Tuxen | 1 |
| #5 | Hazem Hassan | 1 |
| #5 | J. Michael Rodgers | 1 |
| #5 | Michael Boehner | 1 |
| #5 | Robert R. Diekhoff | 1 |
| #5 | Daniel P. Kasuba | 1 |