Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12195977 | Device for securing a guardrail to a pour stop | — | 2025-01-14 |
| D1015851 | Device for securing a guardrail to a roof portion | — | 2024-02-27 |
| D1009601 | Device for securing a guardrail to a pour stop | — | 2024-01-02 |
| 10549134 | Tie-off anchor device with manually secured weights | — | 2020-02-04 |
| 8925904 | Metal safety rail for open floors of a building under construction | Alfred C. Christoffer | 2015-01-06 |
| 8424851 | Metal safety rail for open floors of a building under construction | Alfred C. Christoffer | 2013-04-23 |