• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
• F24F 3/12 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling

Patent holdings for IPC class F24F 3/12

Total number of patents in this class: 88

10-year publication summary

Principal owners for this class