[Class : 11] Apparatus And Installations For Heating, Cooling, Ventilating Purposes; Apparatus And Instruments For Ventilating Purposes; Air Conditioning Apparatus And Installations And Parts And Fittings Therefor; Filters For Air Conditioning; Air Filter Installations; Air Filters For Industrial Installations; Filtering Installations [Household Or Industrial]; Dust Filters For Air Filtering Installations; Air Treatment Equipment, Namely, Air Sterilizers, Air Conditioners, Air Purifiers, Air Filtering Apparatus, Ionization Apparatus For The Treatment Of Air; Motors Being Parts Of Air Conditioning Apparatus; Motorized Fans For Air Conditioning; Heating Apparatus; Apparatus For Ventilating; Ventilation Installations; Air Vents [Ventilation Systems]; Ventilation [Air Conditioning] Installations And Apparatus; Filters For Use With Apparatus For Ventilating. [Class : 37] Installation Of Heating, Ventilation And Air Conditioning [Hvac] Systems; Installation, Maintenance And Repair Relating To Heating, Ventilation, Humidity Control, Air Purification And Air Conditioning.