| 2299070 | Cast slab | |||
| 2234114 | Composite construction member | |||
| 2103969 | Ceiling construction and slab therefor | |||
| 1921285 | Composite slab structure | |||
| 1850735 | Ceiling construction | |||
| 1778315 | Building unit and supporting means therefor | |||
| 1579015 | Ceiling construction | |||
| 1241187 | N/A | |||
| 1049702 | N/A |