4. Earth working
  5. Draft, pitch or ground level responsive depth control

Rodney L. Hagman

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Deep tillage ripper with independent, spring-mounted closing...

Earth working – Diverse tools – Second implement follows path of first
Reexamination Certificate

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Spring-cushioned hydraulic depth control system for tillage impl

Earth working – Draft – pitch or ground level responsive depth control
Patent

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Profile ID: LFUS-PAI-P-1693278

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