Kélène (ethyl chloride) inhaler.
Westhorpe
R
R
D000766:Anesthesia, Dental / Q000266:history*; D005018:Ethyl Chloride / Q000266:history*; D005060:Europe; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century
D005018:Ethyl Chloride