Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666685 | Hand-held implement for cleaning smooth surfaces | Tassilo von Grolman, Uwe Dingert | 1997-09-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666685 | Hand-held implement for cleaning smooth surfaces | Tassilo von Grolman, Uwe Dingert | 1997-09-16 |