4. Earth working
  5. Automatic power control

Darrel M. Wooldridge

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Automatic control device for tractor mounted tools

Earth working – Automatic power control
Patent

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Automatic control for ripper tool

Earth working – Automatic power control
Patent

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Depth indicating means for a tractor supported tool

Communications: electrical – Condition responsive indicating system – Specific condition
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Profile ID: LFUS-PAI-P-591826

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