Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324469 | Method of making single wood concrete layer sound absorption panel | Leni M. Walter-Gurzeler | 1994-06-28 |
| 5314744 | Double coated free aggregate usable in wood concrete technology and method of making the same | Leni M. Walter-Gurzeler | 1994-05-24 |