Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759651 | Writing instrument with a signal cap | Christoph Manusch, Gunter Scholz, Udo Obersteller, Friedrich Dralle, Manfred Brummer +3 more | 1988-07-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759651 | Writing instrument with a signal cap | Christoph Manusch, Gunter Scholz, Udo Obersteller, Friedrich Dralle, Manfred Brummer +3 more | 1988-07-26 |