Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D449384 | Frame for packing pieces for a fireproof lead-through in walls and other construction elements | — | 2001-10-16 |
| D439565 | Holder for a packing piece for a cable lead through | — | 2001-03-27 |
| 6182930 | Packing piece half for a cable lead-through | — | 2001-02-06 |
| D401223 | Packing piece half for a multi cable leed through | — | 1998-11-17 |