International Harvester
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- William Deering (1826-1913), Charles’ father, partnered with E. H. Gammon in 1870 in the manufacture of the Marsh Grain Harvester
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- By 1879, William Deering became the sole owner of Gammon & Deering Manufacturers. Over the course of twenty years, Deering Harvester Company expanded and became a fierce competitor with the McCormick Harvesting Machine Company
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- International Harvester was formed in 1902 by the merging of McCormick Harvesting Machine Company, Deering Harvester Company, and three other agricultural equipment companies
