Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108709 | Color-coded disposable-filter holder | Robert Bugar, Herbert Urlaub | 1992-04-28 |
| 4986904 | Color coded disposable filter holder | Robert Bugar, Herbert Urlaub | 1991-01-22 |
| 4874513 | Disposable filter unit with filter support means at both sides of the filter element | Herbert Urlaub, Franz Grof, Klaus Cosack | 1989-10-17 |