Top Inventors at Manhole Adjusting Contractors All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | John F. Corcoran | 3 |
| 2 | Joseph W. Hower | 3 |
| 3 | William A. Moseley | 3 |
| #4 | Gerald R. Marriott | 1 |
| #5 | Jose J. Castillo | 1 |
| #6 | John Corcoran | 1 |
| #7 | Ikbal A. Molvi | 1 |
| #8 | Abel Flores | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | John F. Corcoran | 3 |
| 2 | Joseph W. Hower | 3 |
| 3 | William A. Moseley | 3 |
| #4 | Gerald R. Marriott | 1 |
| #5 | Jose J. Castillo | 1 |
| #6 | John Corcoran | 1 |
| #7 | Ikbal A. Molvi | 1 |
| #8 | Abel Flores | 1 |