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Minoru Matsuyama
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Iwaki, JP
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Patents Grants
last 30 patents
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Patent Grant
Methods of testing a connection between speakers and a power amplif...
Patent number
9,041,412
Issue date
May 26, 2015
Alpine Electronics, Inc.
Minoru Matsuyama
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
Methods of Testing a Connection Between Speakers and a Power Amplif...
Publication number
20120286798
Publication date
Nov 15, 2012
Minoru Matsuyama
G01 - MEASURING TESTING