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Contribution #53 of 365
David Nelson Crosthwait Jr.
Inventor and Heating-Ventilation Engineer
1920s–1960s
The contribution
How this work helped shape America
Engineer and inventor David Nelson Crosthwait Jr. developed improved heating, ventilation, boiler, and thermostat-control technologies and designed major heating systems, including work associated with Radio City Music Hall. His engineering career produced 39 U.S. patents and numerous international patents.