Crosthwait, David Jr.
1892-1976 · Contribution: 1920s-1960s
Heating, ventilation, and air conditioning (HVAC) system design

Portraits are AI-generated interpretations, not photographs.
Impact on the world
His extensive patent portfolio in HVAC engineering helped shape modern heating and cooling system design used in large buildings.
Life & background
A research engineer specializing in heating, ventilation, and air conditioning systems, Crosthwait held 39 U.S. patents and 80 foreign patents, with his designs used in landmark buildings including Radio City Music Hall.
Sources
- National Inventors Hall of Fame; Purdue University; ASHRAE
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