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

Douglas C. Nicholls

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Packer wheel

Earth working – Rolling – rotating or orbitally moving tool
Patent

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Slack adjustment tester

Signals and indicators – Indicators – Element wear type
Patent

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Spring-loaded ground engaging tool

Earth working – Overload shifting – Against spring return device
Patent

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Profile ID: LFUS-PAI-P-736292

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