Picture No | 10059461 |
Date | 1922 |
Description | Pescara Helicopter 1922 |
Details |
Argentinian designer Marchese Raul Pateras de Pescara builds several helicopters 1919 to 1924, tested in France : this 1922 model has four rotors to provide vertical lift
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Source | unnamed photographer |
Credit | Mary Evans Picture Library |
Restrictions |
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