US Patent 7570779 Speaker
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Patent Inventor Names
Hideaki Sugiura0
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Patent abstract
In a speaker having a magnet circuit causing vibrations of a diaphragm and attached to and supported on a frame, a plurality of projections is formed on a bottom portion of the frame supporting the magnetic circuit. The projections are in point contact with a rear-facing face of a flange of a yoke partially forming the magnetic circuit in order for the magnetic circuit to be supported on the speaker frame.
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US Patent 07570779 Speaker US Patent 7570779 Speaker
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Patent Number
07570779
Patent Number
7570779
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US Patent 07570779 Speaker
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Is a
Patent jurisdiction
Patent number
07570779
Date of patent
August 4, 2009
Patent application number
11085180
Date Filed
March 22, 2005
Patent primary examiner
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