Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9540875 | Safety device for ladders | — | 2017-01-10 |
| D760917 | Ladder safety rail set | — | 2016-07-05 |
| 8316611 | Portable safety skylight replacement assembly | John Witty | 2012-11-27 |
| 8251179 | Portable safety ladder assembly | James T. Anderson | 2012-08-28 |
| 8122673 | Portable safety skylight replacement assembly | John Whitty | 2012-02-28 |
| 7527461 | Safety rail assembly | — | 2009-05-05 |
| 6619428 | Walk-through ladder | — | 2003-09-16 |
| 6347685 | Walk-through ladder | — | 2002-02-19 |
| 6095283 | Walk-through ladder | — | 2000-08-01 |
| 5433290 | Safety line shock absorber | Ravi S. Sastry | 1995-07-18 |
| 5400868 | Shock indicator for use on safety cables | Ravi S. Sastry | 1995-03-28 |
| 4538703 | Climbing aid and safety descent system | Meyer Ostrobrod | 1985-09-03 |
| 4458781 | Climbing aid and safety descent device | Meyer Ostrobrod | 1984-07-10 |
| 4392555 | Fall protection device | — | 1983-07-12 |