4. Metal tools and implements, making
  5. Tool sharpeners
  6. Cutting

Firma August Ruggeberg

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Edge sharpener

Metal tools and implements – making – Tool sharpeners – Cutting
Patent

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Manual sharpener for teeth of chain saws

Metal tools and implements – making – Saw-making or furbishing device or machine
Patent

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Method for manufacturing a file from a thin-walled tube

Metal tools and implements – making – File cutting – Process
Patent

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Profile ID: LFUS-PAI-P-4356

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