During which decades did Frederick McKinley Jones patent his self-powered refrigeration unit for trucks?
Answer
The 1930s and 1940s
Frederick McKinley Jones developed and secured patents for his transformative, self-powered refrigeration unit during a pivotal period in transportation history, spanning the 1930s and 1940s. This timing was crucial as it coincided with the development and expansion of the US highway systems. By creating a portable cooling solution applicable to truck bodies, Jones provided the necessary technology for food distribution to shift successfully from primarily rail networks onto the roads, significantly cutting delivery times.
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