Ascom (Telefonanlagen)
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Ascom, Frankfurt am Main
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Auerswald (Telefone & Telefonanlagen)
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Auerswald, Cremlingen
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DeTeWe (Telefon)
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Motorola (Handys)
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Motorola, Idstein
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Motorola Telefone (Telefone)
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Sony Ericsson (Handy)
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Sony Mobile Communications, Düsseldorf
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Swissvoice (Telefone)
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Topcom (Telefone)
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