Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2008-04-01
2008-04-01
Mehrpour, Naghmeh (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S073000
Reexamination Certificate
active
11098275
ABSTRACT:
A mobile wireless communications device includes a housing and circuit board carried by the housing and having radio frequency (RF) circuitry and a processor operative with each other. Audio circuitry is carried by the circuit board and an audio transducer assembly, such as a speaker, has electrical contacts that electrically engage the audio circuitry for carrying audio signals between the audio circuitry and audio transducer assembly. A filter is mounted at the audio transducer assembly and reduces radio frequency (RF) electromagnetic interference to the audio transducer assembly during device operation.
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Patent Abstracts of Japan, JP 015121891 (Hitachi Zosen Corp), May 18, 1993, Abstract, 3 pages.
Corrigan Michael
Mankaruse George
Zhu Lizhong
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Mehrpour Naghmeh
Reseach in Motion Limited
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