Top Inventors at Underground Systems All Time
Showing 1–13 of 13 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Paul A. Alex | 6 |
| 2 | Duncan Breese | 5 |
| 2 | John Engelhardt | 5 |
| 2 | Larry Fish | 5 |
| #5 | Charles J. Wills | 2 |
| #5 | Chunchuan Xu | 2 |
| #5 | James A. Bright | 2 |
| #5 | Robert F. Smith | 2 |
| #9 | Charles Lipsky | 1 |
| #9 | David C. Bliven | 1 |
| #9 | David W. Purnhagen | 1 |
| #9 | John Mattis | 1 |
| #9 | Steven S. Sunshine | 1 |