Patent Mapping Charts. Room units, e.g. receiving primary air from a central station; 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; Air-conditioning systems or apparatus; Air-humidification; Ventilation; Use of air currents for screening, e.g. air curtain; Control or safety systems or apparatus; Use of energy recovery systems in air conditioning, ventilation or screening; Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening. [More than 3,000 Patents]
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