Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 2, 2013
Patent Application Number
13403947
Date Filed
February 23, 2012
Patent Citations Received
Patent Primary Examiner
Patent abstract
A cell phone protective case, with expander of sound outlet located on the right and left sides and the bottom perimeters, of a cell phone is invented. The frame interior is comprised of a circular throat member for sound impedance, matching to create an improved coupling effect between the original speaker, and the air, where the frame interior is comprised of sectional chambers covering both the horizontal and vertical coverage axis' to change the directional characteristics of sound waves to amplify and channel the sound en route towards the outer perimeters of the device.
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