Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Karl Frenkenberger | Construction Research & Technology Gmbh | 1 |
| 1 | Norbert Ruf | Bell And Howell | 1 |
| 1 | Robert Hollwart | O & K Orenstein And Koppel Ag | 1 |
3 patents · 3 inventors
Ranked #79,433 of 111,555 cities Top 75%
Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Karl Frenkenberger | Construction Research & Technology Gmbh | 1 |
| 1 | Norbert Ruf | Bell And Howell | 1 |
| 1 | Robert Hollwart | O & K Orenstein And Koppel Ag | 1 |