4. Conveyors: fluid current
  5. Intake to fluid current conveyor
  6. Upstream of suction source

Marvin L. Nelson

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Agricultural apparatus having vertically adjustable disc gang as

Earth working – Diverse tools – With independent means for vertical movement
Patent

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Automatic liquid fertilizer rate system

Planting – Liquid or gas soil treatment – Treating substance includes ammonia
Reexamination Certificate

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Pneumatic evacuator-filler for grain drill hopper

Conveyors: fluid current – Intake to fluid current conveyor – Upstream of suction source
Patent

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Profile ID: LFUS-PAI-P-1011595

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