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The first patent for a windshield wiper was filed in 1903 with the US patent office. They had to be manually operated by a hand crank in the cab of the car.

In 1921 windshield wipers became more widely available and ran off of an air engine with an inlet in the engine bay. The faster you went, the faster your wipers went, the slower or more load on the engine, the slower your wipers went.

Electric wipers weren't introduced until 1926, with an electric motor mounted on the outside, invented by the Bosch corporation.

Intermittent windshield wipers were patented in 1967. Ford was the first auto maker to introduce them in 1978. Ford was sued by Robert Kearns, the patent holder, who went on to win a multimillion dollar settlement with Ford. While this lawsuit was going on, practically every other car maker in the world went on to violate the patent (Subaru was one of the few who didn't) and Mr Kearns was paid tens of millions in settlements (he died in 2005).

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