4. Excavating
  5. Snow or ice removing or grooming by portable device
  6. Railway clearer

Ernest Kalve

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Load stress relief for walking dragline excavator base frames

Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent

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Stress relief for walking dragline frames

Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent

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Walking dragline base frame and revolving frame construction

Static structures (e.g. – buildings) – Barrier or major section mounted for in situ repositioning;... – Rotatable about vertical axis
Patent

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Walking dragline excavator frames with torsion resistant tubular

Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent

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Profile ID: LFUS-PAI-P-710326

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