| 2341253 | Trainer for teaching airplane controls | |||
| 2355758 | Control valve device | |||
| 2358016 | Aviation trainer | |||
| 2358018 | Aviation trainer | |||
| 2366603 | Aircraft training apparatus | |||
| 2372741 | Apparatus for illustrating propeller blade pitch movements | |||
| 2385095 | Airplane pilot trainer | |||
| 2396660 | Pilot training apparatus | |||
| 2399767 | Valve | |||
| 2442205 | Aviation trainer | |||
| 2450261 | Training equipment for aviators |
| GB553139A |