Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8292540 | Manhole assembly and related method | John Neil Pickavance, Jean-Claude Royer | 2012-10-23 |
| 8211298 | Cast metal article and a method of its manufacture | Keith Stanley Thompson, John Neil Pickavance, Steven Peter Baldwin | 2012-07-03 |
| 7866915 | Covering for an access aperture, and related assemblies | John Neil Pickavance | 2011-01-11 |
| 7033489 | Drainage assembly | Keith Stanley Thompson, John Neil Pickavance | 2006-04-25 |