4. Earth working
  5. Driven from or guided by stationary object, or anchored
  6. Dragline scraper

Alan G. Zech

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High insulating solar block structures

Stoves and furnaces – Tool having fluid fuel burner – Soldering iron
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Robotic agricultural system with tractor supported on tracks

Earth working – Driven from or guided by stationary object – or anchored – Dragline scraper
Patent

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Profile ID: LFUS-PAI-P-972267

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