Link: http://www.npr.org/sections/money/2017/08/23/545546014/episode-652-the-hydrox-resurrection
Summary: Planet Money tells the tale of a man trying to bring back the forgotten Hydrox brand. Discussion includes close substitutes, trademarks, patents, brands, and what they communicate to consumers.
Original Air Date: September 18, 2015
Length: 19:46
Special thanks to 
@TiemesEsther for recommending this podcast
audioecon 
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