| # | Name | Location | Applications |
|---|---|---|---|
| 1. | W. S. Darley + Co. | 🇺🇸 Itasca, IL, United States | 2 |
| 2. | W.S. Darley & Co. | 🇺🇸 Chippewa Falls, WI, United States | 1 |
| 3. | W.S. Darley & Co. | 🇺🇸 Itasca, IL, United States | 7 |
| 4. | W.S. Darley & Co. | 🇺🇸 Melrose Park, IL, United States | 1 |
| 5. | W.S. Darley & Co. | 🇺🇸 Itasca, IL, United States | 1 |
| 6. | WSDB LLC | 🇺🇸 Dallas, TX, United States | 4 |