Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8336257 | Telescoping floor seal for vertically displaceable partition | Mark McDonald, Liang Kan Zheng | 2012-12-25 |
| 8327905 | Vertically collapsible barrier with improved sealing | Mark McDonald | 2012-12-11 |
| 8302654 | Vertically collapsible weather resistant barrier for opening in a building envelope | Mark McDonald, Chet Lok | 2012-11-06 |
| D649282 | Architectural light shelf | Mark McDonald, Anderson Zheng | 2011-11-22 |