4. Heat exchange
  5. With coated, roughened or polished surface

Nikolai Zoubkov

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Heat transfer tube including enhanced heat transfer surfaces

Heat exchange – With coated – roughened or polished surface
Reexamination Certificate

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Method of forming protrusions on the inner surface of a tube

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

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Profile ID: LFUS-PAI-P-3098067

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