Which famous scientist personally recruited Albert Einstein to endorse his invention, resulting in one of the most influential product endorsements of the early 20th century?

Throughout history, many groundbreaking inventions gained popularity through celebrity endorsements. These partnerships sometimes changed product trajectories dramatically, turning scientific innovations into household names. This trivia explores a fascinating case where a celebrity's involvement significantly boosted an invention's market success. Test your knowledge about this intersection of innovation and fame!

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Leo Szilard for the refrigerator
Alexander Graham Bell for the telephone
Thomas Edison for the phonograph
Nikola Tesla for alternating current