Machine producers - page 154
| NURON | 1 | |
| O K | 1 | |
| O.M.D. | 1 | |
| OCEAN AVENGER PEDDINGHAUS | 1 | |
| Ocemi | 1 | |
| Oemme s.p.a. | 1 | |
| OERLIKON AIR LIQUIDE Column welding machine | 1 | |
| OERLIKON MATTISON | 1 | |
| OEVERMANN | 1 | |
| OFB | 1 | |
| Ohne | 1 | |
| OHTORI KIKO | 1 | |
| OKADA | 1 | |
| OKUMA HOWA | 1 | |
| OKUMA CROWN | 1 | |
| OKUMA SIMULTURN | 1 | |
| OKUMA SIMULTURN LU-300MY | 1 | |
| Oleotecnica | 1 | |
| OLOFSSON | 1 | |
| OLYMPIC | 1 |
