Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D567149 | Bicycle | — | 2008-04-22 |
| D550902 | Helmet | Martin Knopfli | 2007-09-11 |
| D540490 | Helmet | Martin Knopfli | 2007-04-10 |
| D538980 | Helmet | Martin Knopfli | 2007-03-20 |
| D538979 | Helmet | Martin Knopfli | 2007-03-20 |
| D537758 | Wooden bicycle | — | 2007-03-06 |
| D501956 | Helmet ring | Martin Knoepfli | 2005-02-15 |
| 6647556 | Adjustable helmet | Martin Knoepfli | 2003-11-18 |