Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D891993 | Stroller for children | Gabriel Altenhofen, Ralf Holleis | 2020-08-04 |
| D889324 | Stroller for children | Gabriel Altenhofen, Ralf Holleis | 2020-07-07 |
| D875618 | Stroller frame for children | Johannes Häuser, Lingwei Huang, Peter Koller, Ludwig Kaimer, Rolf Holleis +1 more | 2020-02-18 |
| D836498 | Stroller frame for children | Johannes Häuser, Lingwei Huang, Peter Koller, Ludwig Kaimer, Ralf Holleis | 2018-12-25 |