Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6719898 | Sieving device | — | 2004-04-13 |
| 6112677 | Down-draft fixed bed gasifier system and use thereof | Walter Kuntschar, Rudolf Porsch, Arno Siegenthaler, Rainer Wennemar | 2000-09-05 |
| 4779719 | Lifting device with a higher speed in the downward movement area than in the upward movement area | Bertram Botsch | 1988-10-25 |
| 4646067 | Security bar rack | Gunter Ott | 1987-02-24 |
| 4593648 | Electric fish-repelling device | — | 1986-06-10 |
| 4580525 | Electrical fish chasing device | — | 1986-04-08 |