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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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Doc_Kauffman entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-10 and was most recently seen on 2026-04-10.
Doc Kauffman was a lap steel guitar, electric guitar engineer, inventor and pioneer of the world's first patented guitar vibrato system. The patent for "Apparatus for producing tremolo effects" was applied for in 1928 and officially granted to Doc Kauffman on January 5, 1932.
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