Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7771080 | Multifunction edge device for powered doors | — | 2010-08-10 |
| 7755024 | Safety sensing system for a powered door system | Robert Douglas Wells | 2010-07-13 |
| 5698824 | Lift installation with primary and secondary transmitter receiver means | — | 1997-12-16 |
| 5424717 | Laser light transmitter and proximity detector | Reginald K. Payne | 1995-06-13 |
| 5284225 | Lift door apparatus | — | 1994-02-08 |
| 5075632 | Automatic control using proximity sensors | Reginald K. Payne | 1991-12-24 |