| 2641449 | Building construction | |||
| 2616529 | Building structure | |||
| 2540331 | Insulation | |||
| 2474709 | Heating system | |||
| 2329102 | Air distributing apparatus for ventilating systems | |||
| 2291220 | Ventilating system | |||
| 2172944 | Ventilating system | |||
| 1843509 | Fruit processing apparatus | |||
| 1748505 | Building |
| GB760545A |