Medical apparatus, namely, automatic positive airway pressure (APAP) devices; Air pressure flow generators and humidifiers for use with respiratory apparatus; Apparatus for artificial respiration; Continuous positive airway pressure (CPAP) devices; Devices for screening, monitoring and diagnosis respiratory disorders and parts and accessories for all the foregoing, namely, chin restraints, water tubs, oxygen diverter valves, tubing wrap in the nature of insulation for air delivery tubes, air tubes, and filters, all for use with devices for respiratory therapy; Feedback controllers for medical respirators or ventilators; Humidifiers for use with a respiratory apparatus for medical use; Medical ventilators; Nasal continuous positive airway pressure units; Non-invasive positive pressure medical ventilators; Respirators for artificial respiration and parts and accessories therefor; Medical apparatus, namely, humidifiers used in connection with continuous positive airway pressure medical devices