In this article we have compiled the most absurd and ingenious retro inventions that were never destined to find their consumer 
Photos from open sources
Ice cube mask for treating a hangover (1947)
A photo from open sources
Baby stroller with chemical protection attacks (1938)
A photo from open sources
One Wheel Motorcycle (1931)
A photo from open sources
Cone-shaped masks for protection against snowstorms (1939)
A photo from open sources
Family bike and sewing machine (1939)
A photo from open sources
All Terrain Vehicle (1931)
A photo from open sources
Smoking tool in the rain (1931)
A photo from open sources
Amphibian bike that you can ride on land and water (1932)
A photo from open sources
Hat with Built-in Radio (1931)
A photo from open sources
Reading Glasses (1936)
A photo from open sources
Life Vests from Bicycle Tires (1925)
A photo from open sources
Piano where you can play lying in bed (1935)
A photo from open sources
The Forerunner of a Home Hair Dryer (1959)
A photo from open sources
A revolver that takes a picture before shooting (1938)
A photo from open sources
“Safety net” that prevents pedestrians get under the wheels (1924)
A photo from open sources
Smoking device for two cigarettes at the same time (1932)
A photo from open sources
Mobile and folding bridge (1926)
A photo from open sources
Expanding delivery van (1934)
A photo from open sources
The device with which children were taught to walk (1939)
A photo from open sources
