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

Naozi Umino

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Method of making a tip for a ball point pen

Metal working – Method of mechanical manufacture – Assembling or joining
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Tip for ball point pen

Coating implements with material supply – Including ball – roller or endless-belt tool – Ball
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Profile ID: LFUS-PAI-P-1586853

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