| # | Name | Location | Applications |
|---|---|---|---|
| 1. | GT Development | 🇺🇸 Seattle, WA, United States | 2 |
| 2. | GT Development Corporation | 🇺🇸 Seattle, WA, United States | 5 |
| 3. | GT Development Corporation | 🇺🇸 Auburn, WA, United States | 8 |
| 4. | GTD GRAPHIT TECHNOLOGIE GMBH | 🇩🇪 Langgons, Germany | 1 |
| 5. | GTD SISTEMAS DE INFORMACION | 🇪🇸 Barcelona, Spain | 1 |
| 6. | GTD Solution Inc. | 🇺🇸 Jersey City, NJ, United States | 1 |