4. Hydraulic and earth engineering
  5. Underground passageway, e.g., tunnel
  6. Vertical

Yuichi Kikuchi

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Method and machine for constructing shafts

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Vertical
Patent

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Optical element module with a primary coated optical fiber

Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Reexamination Certificate

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Profile ID: LFUS-PAI-P-987918

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