Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8132589 | Regulating valve for the discharge of liquid | Bernhard Kruhsel | 2012-03-13 |
| 5457640 | Method of checking condensate dischargers | Werner Foller, Holm Klann, Jurgen Klattenhoff | 1995-10-10 |
| 5069247 | Condensate drain with monitor device | Werner Foller | 1991-12-03 |