Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622888 | Hoods for the extraction of gases, vapors and suspended material | Wolf-Juergen Denner, Andreas Biernacki | 1986-11-18 |
| 4550650 | Hood for the extraction of gases, vapors and suspended matter | Wolf-Juergen Denner, Andreas Biernacki | 1985-11-05 |