Patents per Year
Top Inventors at Hydra-Shield Mfg. All Time
Showing 1–8 of 8 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Roy Istre | 6 |
| 2 | Henry J. Stehling | 5 |
| 3 | Grady North | 2 |
| #4 | Fred J. Stehling | 1 |
| #4 | George M. Hughes, Jr. | 1 |
| #4 | Horace E. Nichols, Jr. | 1 |
| #4 | Sheldon Levine | 1 |
| #4 | Terry McWilliams | 1 |