4. Refrigeration
  5. Automatic control
  6. Of external fluid or means

David Kok Wai Cheong

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Dual-compartment ventilation and air-conditioning system...

Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Reexamination Certificate

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Energy-efficient variable-air-volume (VAV) system with zonal...

Refrigeration – Automatic control – Of external fluid or means
Reexamination Certificate

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Single-coil twin-fan variable-air-volume (VAV) system for...

Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2690662

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