Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6238755 | Insulating glass units | Karl-Heinz Rueckeshaeuser, Jean-Paul Hautekeer, Andreas Wolf | 2001-05-29 |
| 5928724 | Method of making a building element | Pierre Descamps | 1999-07-27 |
| 5595032 | Building blocks | Jeffrey Richards | 1997-01-21 |