Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314088 | Cardboard packaging for liquids | Erich Heuberger, Wolf-Dieter Knorrich, George Plester, Georg Troska | 1994-05-24 |
| 4890772 | Transport and storage container for concentrates of beverages or the like | Erich Heuberger, Wolf-Dieter Knorrich | 1990-01-02 |