Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5870783 | Kitchen sink | Elmar Stoll, Fritz Berchtold, Max Ris, Martin Bolli | 1999-02-16 |
| 5797150 | Seamless stainless steel sink bowl with a grid ledge | — | 1998-08-25 |
| 5644943 | Method for forming a seamless stainless steel sink bowl with a grid ledge and product | — | 1997-07-08 |