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

Ulrich Naumann

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Heat exchanger tube

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

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Process and apparatus for producing hollow bodies from...

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Reexamination Certificate

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Tube for use in a heat exchanger

Heat exchange – With coated – roughened or polished surface
Patent

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Use of a low-alloyed copper alloy and hollow profile...

Metal treatment – Stock – Copper base
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1694673

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