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1947 David Mamet, Chicago, playwright/dir, Speed the Plow, House of Games
1937 Plow for laying submarine cable patented 1869 James Oliver invents removable tempered steel plow blade 1833 John Deere makes 1st steel plow 1797 Charles Newbold patents 1st cast-iron plow. He can't sell it to farmers, though, they fear effects of iron on soil! |
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