Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517407 | Three-dimensional interactive book | — | 2003-02-11 |
| 4850994 | Hypodermic syringe | Ekkehard Zerbst, Hans-Eberhard Koralewski | 1989-07-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517407 | Three-dimensional interactive book | — | 2003-02-11 |
| 4850994 | Hypodermic syringe | Ekkehard Zerbst, Hans-Eberhard Koralewski | 1989-07-25 |