4. Mining or in situ disintegration of hard material
  5. With separation of materials
  6. Separation below surface of earth or water

Yoshio Asakawa

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Apparatus for recovering minerals, in particular manganese nodul

Mining or in situ disintegration of hard material – With separation of materials – Separation below surface of earth or water
Patent

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Medical bed apparatus

Traversing hoists – Having boom shiftable vertically along a linear path – Length of hoisting cable between boom and load decreases...
Patent

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Patient carrying device

Beds – With means for relocating an invalid – With a hoisting – lifting – elevating – or raising device
Patent

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Supporter for a human body and bed equipment using the same

Beds – With means for relocating an invalid – Horizontally sliding patient support surface
Patent

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