4. Hydraulic and earth engineering
  5. Foundation
  6. Columnar structure

Hiroshi Kusumi

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Cylindrical telescopic kelly-bar apparatus

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling facilitates relative axial motion between coupled... – Coupling between rotary drive table and axially movable...
Patent

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Receiver and receiving method

Television – Diverse device controlled by information embedded in video...
Reexamination Certificate

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Stopper apparatus for rotary reaction force

Hydraulic and earth engineering – Foundation – Columnar structure
Patent

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Swivel joint for reverse circulation drill

Pipe joints or couplings – With fluid pressure seal – Swivel with flange in socket
Patent

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Profile ID: LFUS-PAI-P-122197

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