Frederick M. Jones, a prolific African American inventor, was granted a patent for a two-cycle gasoline engine on May 29, 1945 (U.S. Patent No. 2,376,968). Best known for inventing mobile refrigeration for trucks and trains, Jones held over 60 patents in his lifetime—many in the field of refrigeration, but also covering engines, electronics, and sound equipment. His innovations revolutionized the food and transportation industries and played a key role in preserving medical supplies during World War II.
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