Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4614163 | Ink pot for felt pens for inscribing posters or the like | Wolfgang Sommerfeld | 1986-09-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4614163 | Ink pot for felt pens for inscribing posters or the like | Wolfgang Sommerfeld | 1986-09-30 |