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Inventor Profiles: Frederick Ellsworth Sickels
Invent Now | Hall of Fame | Search | Inventor Profile | Frederick Ellsworth Sickels Frederick Ellsworth Sickels Born September 20, 1819 – March 8, 1895 Valve for Steam-Engines Patent #: 424,581 Inducted 2007 Frederick Ellsworth Sickels is considered one of the pioneers of s...
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