Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7467868 | Head magnifier | Guido Hattendorf, Roland Hertle, Reinhold Pfeifer | 2008-12-23 |
| D574078 | Feminine hygiene article | Signe Christina Larson, Eugenia Bertulis | 2008-07-29 |
| D564011 | Magnifier spectacles | Guido Hattendorf, Katrin Peters | 2008-03-11 |
| D562876 | Binocular magnifier | Guido Hattendorf, Katrin Peters | 2008-02-26 |