Additional examples are adjusted to the entries in an automated way - we cannot guarantee that they are correct.
On a larger scale, for example, in planting potatoes, a tractor can pull a furrower implement that quickly creates drills that can be manually or mechanically seeded and covered.
Allen was awarded almost 300 patents for a wide range of farming machinery, including the fertilizer drill, seed drill, potato digger, cultivator, furrower, pulverizer, grass edger and numerous other farm implements.
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