Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11501671 | Landscaping marking system using selectively actuated pop up visible markers and method of selectively visibly identifying subterranean features implementing the same | — | 2022-11-15 |
| 10748184 | Notifying users of coverage | K Pearl Harrison | 2020-08-18 |
| 5695854 | Light mask | Simon Peter Breen, Nigel Ian Barrett | 1997-12-09 |
| 5499304 | Light mask | Simon Peter Breen, Nigel Ian Barrett | 1996-03-12 |