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John Deere 4020 attachments front-end loader Attachment details ... 4020 Serial Number Location Serial number plate on the rear of the 4020 transmission case. 4020 Serial Numbers 1964 65000 1965 91000 1966 119000 1967 145660 1968 173982 1969 201000 1970 222160 1971 250000 1972 260791...
In his work, Deere found, through the frequent repairs that he had to make, that the wood and cast-ironplowused in the easternUnited Statesfrom the 1820s was not suited to the heavy stickysoilsof theprairies. He began experimenting, and in 1837 he invented one of the first steelplowsthat...