4. Metal working
  5. Method of mechanical manufacture
  6. Heat exchanger or boiler making

Yu-Yuan Yen

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Heat transfer device

Heat exchange – Intermediate fluent heat exchange material receiving and... – Liquid fluent heat exchange material
Reexamination Certificate

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Method of manufacturing heat transfer device

Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3165628

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