| # | Name | Location | Applications |
|---|---|---|---|
| 1. | H&D Electric, LLC | 🇺🇸 Baltimore, MD, United States | 4 |
| 2. | H&D Electrics, LLC | 🇺🇸 Baltimore, MD, United States | 1 |
| 3. | HD Electric Company | 🇺🇸 Waukegan, IL, United States | 7 |
| 4. | HD Enterprises, LLC | 🇺🇸 Rainbow City, AL, United States | 1 |