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

Guenter Fetzer

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Heat-exchanger tube structured on both sides and a method...

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

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Light barrier or light grid with alignment mechanism

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2513152

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