The case began with a phone call from a clerk at a local Circuit City.

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The invention that matters in this particular case is what we now call the mobile phone.

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She had to wait an hour by a pay phone to find someone who wanted to use it, and in his case, it was an emergency call.

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Similar to the predecessor, the phone features a panic button on the back that'll call and text message up to five people in the case of an emergency.

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