| # | Name | Location | Applications |
|---|---|---|---|
| 1. | E. F. Johnson Company | 🇺🇸 Irving, TX, United States | 2 |
| 2. | E. F. Johnson Company | 🇺🇸 Waseca, MN, United States | 1 |
| 3. | E.F. Johnson | 🇺🇸 Irving, TX, United States | 1 |
| 4. | E.F. Johnson Company | 🇺🇸 Waseca, WI, United States | 1 |
| 5. | E.F. Johnson Company | 🇺🇸 Irving, TX, United States | 41 |
| 6. | EF Johnson Technologies, Inc. | 🇺🇸 Irving, TX, United States | 2 |
| 7. | EFJ, INC. | 🇺🇸 Irving, TX, United States | 1 |