Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089973 | Greenhouse venting system | — | 2000-07-18 |
| 5765324 | Skylight construction | — | 1998-06-16 |
| 5715634 | Skylight construction | — | 1998-02-10 |
| 4357743 | Controlled deflection roll | Josef Hefter, Peter Heitmann, Christoph Link, Wolf-Gunter Stotz, Karl Volz | 1982-11-09 |
| 4192710 | Method and apparatus for measuring the throughflow quantity of a liquid substance per unit of time in a papermaking machine | Alfred Bubik, Rainer Jox | 1980-03-11 |