Patents per Year
Top Inventors at Ris Irrigation Systems All Time
Showing 1–9 of 9 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | John M. Langa | 2 |
| 1 | Robert B. Costa | 2 |
| 3 | David E. Mominee | 1 |
| 3 | Dale P. Zauner | 1 |
| 3 | Donald E. Mock | 1 |
| 3 | Gilbert W. Vance | 1 |
| 3 | Ronald J. Sargent | 1 |
| 3 | S. W. O. Menzel | 1 |
| 3 | Stanley W. O. Menzel | 1 |