Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759651 | Writing instrument with a signal cap | Christoph Manusch, Gunter Scholz, Udo Obersteller, Heinrich Schoop, Friedrich Dralle +3 more | 1988-07-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759651 | Writing instrument with a signal cap | Christoph Manusch, Gunter Scholz, Udo Obersteller, Heinrich Schoop, Friedrich Dralle +3 more | 1988-07-26 |