Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322562 | Production of cement-mortar dry mix | Peter Ellenberger, Heinz W. Schmitt, Qiwei Yang | 1994-06-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322562 | Production of cement-mortar dry mix | Peter Ellenberger, Heinz W. Schmitt, Qiwei Yang | 1994-06-21 |