Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108709 | Color-coded disposable-filter holder | Asok Chakraborty, Herbert Urlaub | 1992-04-28 |
| 4986904 | Color coded disposable filter holder | Asok Chakraborty, Herbert Urlaub | 1991-01-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108709 | Color-coded disposable-filter holder | Asok Chakraborty, Herbert Urlaub | 1992-04-28 |
| 4986904 | Color coded disposable filter holder | Asok Chakraborty, Herbert Urlaub | 1991-01-22 |