| # | Name | Location | Applications |
|---|---|---|---|
| 1. | GW Research Limited | π¬π§ Histon, Cambridge, Cambridgeshire, United Kingdom | 5 |
| 2. | GW Research Limited | π¬π§ Histon, United Kingdom | 3 |
| 3. | GW Research Limited | π¬π§ Cambridge, United Kingdom | 44 |
| 4. | GWR Instruments | πΊπΈ San Diego, CA, United States | 1 |
| 5. | GWR Instruments, Inc. | πΊπΈ San Diego, CA, United States | 3 |