Top Inventors at Spuehl Ag All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Hans Knoepfel | 3 |
| 2 | Siegfried Grueninger | 2 |
| 3 | Hans Peter Knopfel | 1 |
| #4 | Roland Graf | 1 |
| #5 | Siefgried Grueninger | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Hans Knoepfel | 3 |
| 2 | Siegfried Grueninger | 2 |
| 3 | Hans Peter Knopfel | 1 |
| #4 | Roland Graf | 1 |
| #5 | Siefgried Grueninger | 1 |