Arthur Ernest Guedel (1883 – 1956) was an American anesthesiologist. Guedel Oropharyngeal airway and classification system
Andranik Ovassapian (1936 - 2010) was an American anesthesiologist and expert on difficult airway management.
Oropharyngeal Airway (OPA): Lifts the tongue off the posterior pharyngeal wall to prevent airway obstruction; bite block; assist oropharyngeal suctioning; promotes moulding of the face of a mask for manual ventilation
Robert Alvin Berman (1914-1999) was an American anesthesiologist and inventor including the Berman Airway, Quick Cuff and Respir-Aider