Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428799 | Locking device for a quick coupler | Michael Hugh James RIDER, Andrew James Phillip Rider, David Aperahama Calvert, Andre Richard Anderson | 2025-09-30 |
| 11846083 | Locking device for a quick coupler | Michael Hugh James RIDER, Andrew James Phillip Rider, David Aperahama Calvert, Andre Richard Anderson | 2023-12-19 |
| 10280588 | Coupler for earth moving or materials handling machine | David Aperahama Calvert | 2019-05-07 |
| 9863117 | Coupler for earth moving or materials handling machine | David Aperahama Calvert | 2018-01-09 |
| 8347974 | Safety locking device | David Aperahama Calvert | 2013-01-08 |
| 7828070 | Safety locking device | David Aperahama Calvert | 2010-11-09 |