| # | Name | Location | Applications |
|---|---|---|---|
| 1. | H. C. Duke & Son LLC | 🇺🇸 East Moline, IL, United States | 2 |
| 2. | H.C. DEVELOPMENT S.R.L. | 🇮🇹 Roma, Italy | 1 |
| 3. | H.C. Duke & Son, LLC | 🇺🇸 East Moline, IL, United States | 6 |
| 4. | HCD AGENCY LLC | 🇺🇸 Los Angeles, CA, United States | 3 |
| 5. | HCD Software LLC | 🇺🇸 Charlotte, NC, United States | 4 |
| 6. | HCDI HOLDINGS LIMITED | ðŸ‡ðŸ‡° Wanchai, Hong Kong | 1 |