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The Number 1868: Properties and MeaningsPrime Factors of 1868=2x2x467.
The Year 1868 ADIn the year 1868 AD George Westinghouse invented air brakes.
In the year 1868 AD Robert Mushet invented tungsten steel.
In the year 1868 AD J P Knight invented traffic lights.
In the year 1868 AD the Chemical Element Helium was discovered independently by Pierre Janssen and Norman Lockyer.
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