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Universal telecommunications audio coupling device

Dynamic information storage or retrieval – Combined independent audio systems – Radio
Patent

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User management system for musical accompaniment playing apparat

Dynamic information storage or retrieval – Combined independent audio systems – Changeover between audio systems
Patent

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User selectable display modes for a vehicle MP3 compact disc...

Dynamic information storage or retrieval – Combined independent audio systems – Radio
Reexamination Certificate

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Using different sampling rates to record multi-channel...

Dynamic information storage or retrieval – Combined independent audio systems – Combining signals to form composite
Reexamination Certificate

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Vehicle electronic system

Dynamic information storage or retrieval – Combined independent audio systems – Radio
Patent

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Voice frequency signal actuated tape recorder

Dynamic information storage or retrieval – Combined independent audio systems – Radio
Patent

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Wireless voice messaging device for use with cassette player

Dynamic information storage or retrieval – Combined independent audio systems – Changeover between audio systems
Patent

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