4. Earth working
  5. Overload shifting
  6. Against spring return device

William L. Grimm

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Dual action earth working implement

Earth working – Overload shifting – Against spring return device
Patent

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Half esters of isobutylene/maleic anhydride copolymer as...

Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Reexamination Certificate

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Magnetically-responsive microparticles with improved...

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate

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Method of making a metal earth working implement

Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent

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Multi-piece subsoiler unit for an agricultural implement

Earth working – Overload shifting – Against spring return device
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Profile ID: LFUS-PAI-P-1030406

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