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DK20 patents
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Switching amplifier driven by a controlled power supply
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Loudness level and range processing
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Method of establishing a harmony control signal controlled in real-time by a guitar input signal
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US9559650B1Jan 31, 2017
Loudness limiter
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US9159310B2Oct 13, 2015
Musical modification effects
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Polyphonic tuner
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Audio visualizer
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Loudness meter and loudness metering method
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US8718311B2May 6, 2014
Microphone stand mounting brackets
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US7583137B2Sep 1, 2009
Power supply compensation
TC GROUP AS2 citations61
US9224375B1Dec 29, 2015
Musical modification effects
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US9076416B2Jul 7, 2015
Polyphonic tuner
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US9179208B2Nov 3, 2015
Microphone stand mounting brackets
TC GROUP AS3 citations53
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Polyphonic tuner
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US9520843B2Dec 13, 2016
Power amplifiers coupled in series
TC GROUP AS0 citations51
US8028013B2Sep 27, 2011
Fast filtering means and filtering and decimation methods
TC GROUP AS1 citations51
US7728689B2Jun 1, 2010
Pulse width modulator system
TC GROUP AS0 citations51
US7551022B2Jun 23, 2009
Power supply compensation
TC GROUP AS1 citations51
US9288563B2Mar 15, 2016
Microphone stand mounting brackets
TC GROUP AS0 citations48
US7796766B2Sep 14, 2010
Audio center channel phantomizer
TC GROUP AS0 citations32