Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361079 | Apparatus for extending ventilating conduits | Hans Jørgen Christensen, Werner Korfmann | 1982-11-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361079 | Apparatus for extending ventilating conduits | Hans Jørgen Christensen, Werner Korfmann | 1982-11-30 |