| Nom | Société-mère | Source |
|---|---|---|
| FREI | Frei Ag | MSHM |
| Frei AG | Frei Ag | SATP |
| Frei AG | Frei Ag | BAM |
| Frei AG | Frei Ag | HPRA |
| FREI AG | Frei Ag | BAM |
| Frei AG Aktive Reha | Frei Ag | HPRA |
| FREI AG- Aktive Rehasysteme | Frei Ag | BAM |
| FREI AG- Aktive Rehasysteme | Frei Ag | DMA |
| FREI AKTIVE REHA-SYSTEME | Frei Ag | HPRA |
| FREI- AKTIVE REHASYSTEME | Frei Ag | MSHM |