Patents per Year
Top Inventors at Northern States Power All Time
Showing 1–5 of 5 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | John M. Lehto | 9 |
| 2 | Frank V. Mach | 1 |
| 2 | Michael Skinner | 1 |
| 2 | Peter Mach | 1 |
| 2 | Raymond L. Smith | 1 |
Showing 1–5 of 5 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | John M. Lehto | 9 |
| 2 | Frank V. Mach | 1 |
| 2 | Michael Skinner | 1 |
| 2 | Peter Mach | 1 |
| 2 | Raymond L. Smith | 1 |