4. Mining or in situ disintegration of hard material
  5. Processes

Alfred Hackmack

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Continual digging, transport and loading accessory for earth or

Excavating – Self-loading vehicle – Having endless digger or conveyor
Patent

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Milling device

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

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Slit trencher

Hydraulic and earth engineering – Earth treatment or control – Chemical
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Surface working accessory

Mining or in situ disintegration of hard material – Processes
Patent

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Surface working accessory and method

Mining or in situ disintegration of hard material – Processes
Patent

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Profile ID: LFUS-PAI-P-257394

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