Rosa Chamberlin, GB191110468A
Machine for Cooling Gases by Direct Thermodynamic Process.

On April 18, 1912, Rosa Chamberlin of London, UK, was granted a patent for inventing a novel air-cooling machine. Intended for use in industrial settings, the invention featured multiple pistons and cylinders to compress air and lower the external temperature.
Date of Application: 1 May 1911
Date of Issuance: 18 April 1912
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