Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9995426 | Furniture swivel and furniture including the same | John Mackenzie, Robert Knott, Lenze Elzinga | 2018-06-12 |
| 9574704 | Furniture swivel and furniture including the same | John Mackenzie, Robert Knott, Lenze Elzinga | 2017-02-21 |