Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4287223 | Covering a steel pipe having a welding seam with a thermoplastic coating | Karl-Heinz Hackert | 1981-09-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4287223 | Covering a steel pipe having a welding seam with a thermoplastic coating | Karl-Heinz Hackert | 1981-09-01 |