Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7721431 | Method of making a piston | Duncan Parker, David Thornton Pindar, Roger James Jones, Gillian Hume | 2010-05-25 |
| 7341037 | Engine piston and manufacture | Duncan Parker, David Thornton Pindar, Roger James Jones, Gillian Hume | 2008-03-11 |