| Ettevõtte nimi | Reg. kood |
|---|---|
| MUSEFUL OÜ | 17184843 |
| MUSEFUL MEDIA OÜ | 17081072 |
| AMBER MUSEUM OÜ | 12286651 |
| MUSEUM SOLUTIONS OÜ | 17318232 |
| THE WORLD DIAMOND MUSEUM OÜ | 16601813 |
| USEFUL OÜ | 12801478 |
| REUSEFUL OÜ | 12398835 |
| USEFUL FILMS OÜ | 12753779 |
| USEFUL HANDS OÜ | 11482672 |
| USEFUL UNDERTAKINGS OÜ | 16965582 |
| USEFUL SYSTEMS OÜ | 17370540 |
| THE REALLY USEFUL FINANCE COMPANY OÜ | 16618475 |