Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6150742 | Energy storage and conversion apparatus | Colin David Tarrant, Ian Crombie, Geoffrey Barker, David Stephen Hayward | 2000-11-21 |
| 5912519 | Energy storage and conversion apparatus | Colin David Tarrant, Ian Crombie, Geoffrey Barker, David Stephen Hayward | 1999-06-15 |