Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7674155 | Process and apparatus for artificially ageing blocks | Hans Gebhart, Martin Rothdach, Hermann Sauter | 2010-03-09 |
| 7404755 | Process and apparatus for artificially ageing blocks | Hans Gebhart, Martin Rothdach, Hermann Sauter | 2008-07-29 |
| 7128639 | Process and apparatus for the artificial aging of stones | Hermann Sauter | 2006-10-31 |