Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11062146 | Maintenance of playing surfaces | Derek Halliday, Gordon Halliday | 2021-07-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11062146 | Maintenance of playing surfaces | Derek Halliday, Gordon Halliday | 2021-07-13 |