Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D437888 | Writing instrument | Siegfried Keil | 2001-02-20 |
| D416576 | Writing utensil with slanted tip | — | 1999-11-16 |
| D380008 | Writing instrument | — | 1997-06-17 |
| D374251 | Writing instrument | — | 1996-10-01 |