Midget Helicopters in the Tiime Flying Saucers: 1948's 'Skyhook'

A miniature helicopter, dubbed "Skyhook" was created by designers John E. Duncan and W. Hewitt Baylor to carry small payloads.

It weighed 15 pounds , could carry payloads up to 10 pounds, could be carried in a suitcase and could rise to 1000 feet with its rotors.