| # | Name | Location | Applications |
|---|---|---|---|
| 1. | W.R. Davis Engineering Limited | π¨π¦ Ottawa, Ontario, Canada | 1 |
| 2. | WRD Corporation | πΊπΈ Newburyport, MA, United States | 1 |
| 3. | WRDS, INC. | πΊπΈ FRISCO, TX, United States | 1 |
| 4. | WRDT, LLC | πΊπΈ Erie, PA, United States | 2 |