Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4705415 | Matrix printer and inker for indefinite length articles | Andrei Grombchevsky | 1987-11-10 |
| 4637743 | Matrix printer and inker for indefinite length articles | Andrei Grombchevsky | 1987-01-20 |