steel plow By vallen1 Jan 1, 1837 steel plow : john deere's first invention of the plow Period: Jan 1, 1837 to Jan 22, 2012 steel plow Jan 1, 1900 steel plow 1900 ; looks the same , but is easier to use Jan 22, 2012 plow of 2012 ; has improved tremendously , it is now mechanicly powered instead of powered by man
