Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7305798 | Composite overfilled arch system | — | 2007-12-11 |
| 7114305 | Hybrid arched overfilled structure | — | 2006-10-03 |
| 6988337 | Means and method for constructing a fully precast top arch overfilled system | — | 2006-01-24 |
| 6922950 | Top arch overfilled system | — | 2005-08-02 |
| 6719492 | Top arch overfilled system | — | 2004-04-13 |
| 6640505 | Hybrid arched overfilled structure | — | 2003-11-04 |
| 6434892 | Overfilled, precast skewed arch bridge | — | 2002-08-20 |
| 5443305 | Tunnelling machine | Kurt Baumann | 1995-08-22 |
| 4490950 | Front wall of overfilled arched reinforced concrete underpasses | — | 1985-01-01 |
| 4458457 | Overfilled arch out of prefab reinforced concrete shells | — | 1984-07-10 |
| 4278075 | Process and device for the recuperation of heat from selected ranges of the solar spectrum | — | 1981-07-14 |