| 2403291 | Damper | |||
| 2369119 | Ventilating system | |||
| 2365867 | Volume control for diffusers | |||
| 2345938 | Air outlet device | |||
| 2311195 | N/A | |||
| 2252264 | Ventilating apparatus | |||
| 2229747 | Air distributing device | |||
| 2217944 | Air mixer for ventilating systems | |||
| 2197614 | Air directing device or nozzle for use in ventilating systems | |||
| 2125454 | Ventilator | |||
| 2083621 | Fastener for containers | |||
| 0604371 | N/A |
| GB190916654A | ||||
| GB365048A |