4. Mining or in situ disintegration of hard material
  5. Hard material disintegrating machines
  6. With mine roof-supporting means

Tomofumi Ishino

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Tunnel excavator with crawler drive and roof support bearing...

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means
Reexamination Certificate

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Tunnel excavator with S-shaped soil plate

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2079220

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