The De Ford Somnoform inhaler.
Westhorpe
R
R
Geoffrey Kaye Museum of Anaesthetic History.
D000766:Anesthesia, Dental / Q000266:history* / Q000295:instrumentation; D000769:Anesthesia, Inhalation / Q000266:history* / Q000295:instrumentation; D003813:Dentistry; D004867:Equipment Design; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008397:Masks; D014481:United States