Apparatus and installations for use in the regulation of moisture content; apparatus and installations for humidification; air humidifying devices, namely, apparatus and installations for delivery of moisture and/or other substances to inspired air; air humidifiers; humidifiers not for medical use; face masks being parts of humidifiers

Apparatus and installation for use in the regulation of moisture content, namely, humidifiers; devices delivering humidified air to the user by means of a heat and moisture exchanger attached to a face mask, for non medical use