Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699578 | Cleaning device | Norbert Dumler | 1997-12-23 |
| 5638568 | Small brush, in particular interdental brush | Norbert Dumler | 1997-06-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699578 | Cleaning device | Norbert Dumler | 1997-12-23 |
| 5638568 | Small brush, in particular interdental brush | Norbert Dumler | 1997-06-17 |