Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4390568 | Lining a steel pipe internally with a cement mortar | Wilhelm Schwenk, Bruno Heinrich | 1983-06-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4390568 | Lining a steel pipe internally with a cement mortar | Wilhelm Schwenk, Bruno Heinrich | 1983-06-28 |