4. Metal deforming
  5. Process
  6. With temperature maintenance or modification

Naoya Hirase

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Method for Cr-plating of mandrel bars, the mandrel bar, and...

Metal deforming – With 'coating' of work – Metal coating
Reexamination Certificate

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Method for manufacturing seamless steel pipe made of high...

Metal deforming – Process – With temperature maintenance or modification
Reexamination Certificate

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Method of manufacturing plug used to pierce and roll metal...

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Reexamination Certificate

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Piercing and rolling plug, method of regenerating such...

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Reexamination Certificate

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