Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4520482 | Safety controller | Bruno de Langre | 1985-05-28 |
| 4507541 | Measuring proximity of metal to an arc welding torch | William Grant | 1985-03-26 |
| 4460996 | Process and apparatus for error detection | Bruno de Langre | 1984-07-17 |