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    • Grain Harvester 

      Whitney, Richard W.; Board of Regents/Oklahoma State University and the A & M Colleges (U.S. Patent and Trademark Office, 1994-06-28)
      A grain harvester for propulsion by a tractor over a field of grain growing on upwardly extending plant stems, the harvester having a housing supported and movable in a direction of travel over a field of grain by a tractor, ...