Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D966877 | Hanger bar for a hanger bar assembly | Frederick William Kopitzke, Amir Lotfi | 2022-10-18 |
| 11231154 | Bar hanger assembly with mating telescoping bars | Frederick William Kopitzke, Amir Lotfi | 2022-01-25 |