Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6845591 | Hollow-core slab for forming a floor field in which ducts can be incorporated, and method for forming a floor field with ducts using such hollow-core slabs | Ronald Klein-Holte, Dick Stoll | 2005-01-25 |