Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8522919 | Two-way locking device for height safety apparatus | — | 2013-09-03 |
| 6945357 | Removable height safety apparatus | — | 2005-09-20 |
| 6330861 | Height safety system | — | 2001-12-18 |
| 6125766 | Removable load transfer device | — | 2000-10-03 |
| 5934408 | Fall arrest device | — | 1999-08-10 |
| 5458221 | Shock absorbing device | David Patterson | 1995-10-17 |
| 5127338 | Load attachment, traversing device with spring biased scissor linkage to grip cable and permit traversal of cable hangers | — | 1992-07-07 |
| 5056954 | Releasable gripping, locking, coupling or support devices | Alan W. Tupper | 1991-10-15 |
| 4988248 | Releasable coupling or attachment device | — | 1991-01-29 |
| 4644617 | Releasable locking coupling or support device | Alan W. Tupper | 1987-02-24 |
| 4313236 | Safety equipment for boats | Alan W. Tupper | 1982-02-02 |
| 4265179 | Load-transfer device | Alan W. Tupper | 1981-05-05 |