Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D916321 | Jamb liner | Shane Hedley McDuff, David John Ackland | 2021-04-13 |
| D908474 | Pulley balancing device for windows | Shane Hedley McDuff, Nigel Proctor, Drew Phillip Anthony, David John Ackland | 2021-01-26 |