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US2016177598A1
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Locking device
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Control device for call control
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EP2744221A1
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Microphone boom
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Ear appliance
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Headphone with a headband
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A self powered audio compressor circuit
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Audio device and method of controlling audio device
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Headset with side support
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Headset with a name tag display and a cheek spacer
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Base station, wireless headset and headband thereto.
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A portable communication device comprising an antenna
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Headset with pivotal parts
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Wireless earphones
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A learning headset
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AU2003243933A1
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Wireless communication systems.
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Active audio compressing in telecommunication
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