I just did a web search and found piles of Sumo info…Jason Stoddard of Schiit was very involved, Jim Bongiorno…a Sumo fan Youtube site, etc.
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The SUMO trademark appears to have been cancelled in 2009. Here is the record from the U.S. Trademark and Patent Office -- http://tsdr.uspto.gov/#caseNumber=73714069&caseType=SERIAL_NO&searchType=statusSearch The company was bought by Califone International in the 1980s. Here is an interview that mentions it, originally published in 1988. https://www.stereophile.com/interviews/rich_may_of_sumo_an_audio_dynasty/index.html The former president of Califone, Michael Custer, is now CEO at Chatsworth Products, an IT services company. |
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