Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11643828 | Support apparatus | David Robert Black | 2023-05-09 |
| 11549274 | Support apparatus | Robert D. Black | 2023-01-10 |
| 9540838 | Access panel | Robert D. Black | 2017-01-10 |
| 9422737 | Retractable cover | Robert D. Black | 2016-08-23 |
| 8161598 | Filtering means and floor-sweeping machine provided with such means | Primo Granata | 2012-04-24 |
| 7845119 | Access unit with variable size opening for construction application | Robert D. Black | 2010-12-07 |
| 6748715 | Safety unit | Robert D. Black | 2004-06-15 |