Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4754538 | Annular tube-like driver | John Brian Stewart, Laszlo Szalvay, Bernard de Brunier | 1988-07-05 |
| 4637436 | Annular tube-like driver | John Brian Stewart, Laszlo Szalvay, Bernard de Brunier | 1987-01-20 |