4. A - Human Necessities
  5. 01
  6. B

John D. Long

A - Human Necessities – 01 – B

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Country: United States Of America

Depth sensing structure for an agricultural implement

A - Human Necessities – 01 – B
Patent

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Extractive distillation of alcohol-hydrocarbon mixtures

B - Operations – Transporting – 01 – D
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Flexible harrow with tooth-adjusting links

A - Human Necessities – 01 – B
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Method and apparatus for forming and reforming a furrow

A - Human Necessities – 01 – B
Patent

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Seed boot extension

A - Human Necessities – 01 – B
Patent

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Art of excavating shafts

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Patent

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Profile ID: LFCA-PAI-P-60001

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