On December 8, 2024, Lloyd Espenschied and Herman Affel received U.S. Patent No. 1,835,031 on a Concentric Conducting System — coaxial cable:

Coaxial cable opened a wide spectrum of frequencies for long distance telephone service, making it possible to carry thousands of simultaneous phone calls on long distance circuits, and permitted the transmission of television signals. Espenschied was the holder of more than 100 patents in both wire and radio communication systems, and his co-inventor Affel likewise held numerous patents. Both were inducted into the National Inventors Hall of Fame in 2006.