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John Ericcson
Date: 1803-1889
Remarks: John Ericcson, engineer and inventor, perfected the screw propeller and designed the Union ironclad Monitor which engaged the Confederate ironclad Merimac in 1862 and revolutionized naval warfare. Ericsson built a platform on the peaked roof on his house at 36 Beach Street in Manhattan, where he conducted experiments in an effort ot perfect a solar engine.