Mop: The modern mop with a mechanical wringing mechanism was invented in Spain by Manuel Jalón Corominas in 1956.
Autogiro: The autogiro, a type of aircraft that uses both lift from rotating wings and thrust from a propeller, was invented by Spanish engineer Juan de la Cierva in 1923.
Submarine: The design for the first documented submarine was created by Catalan engineer Narcís Monturiol in the 19th century.
Guitar: The modern classical guitar is based on designs developed in Spain during the 16th and 17th centuries.
Blood Transfusion: Spanish physician Miguel Servet conducted early experiments on blood circulation and performed one of the first blood transfusions in the 16th century.