Telephonic communications – Terminal – Housing or housing component
Reexamination Certificate
2005-06-14
2005-06-14
Chiang, Jack (Department: 2642)
Telephonic communications
Terminal
Housing or housing component
Reexamination Certificate
active
06907121
ABSTRACT:
An acoustic horn has an acoustic impedance matched with impedances of an ear and a driver. The acoustic horn can be used in an electroacoustic transducer including the driver, and the acoustic horn. The electroacoustic transducer is particularly well-suited for use in portable device such as a radiotelephone, pager, or other device.
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Chiang Jack
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
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