4. Metal working
  5. Method of mechanical manufacture
  6. Assembling or joining

Birger Ludvigson

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Device for tensioning a reinforcing strand

Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner
Patent

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Method of eliminating and uneven stress distribution in an elong

Metal working – Method of mechanical manufacture – Assembling or joining
Patent

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Pile driving device

Tool driving or impacting – Automatic control of power operated means
Patent

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Profile ID: LFUS-PAI-P-885125

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