Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693528 | Composting unit having a ventilation system for closed rotting units | Klaus Grabbe, Lothar Schaar | 1997-12-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693528 | Composting unit having a ventilation system for closed rotting units | Klaus Grabbe, Lothar Schaar | 1997-12-02 |