CH479211A -
Traffic observation device in a switching center
- Google Patents
Traffic observation device in a switching center
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Publication number
CH479211A
CH479211ACH906868ACH906868ACH479211ACH 479211 ACH479211 ACH 479211ACH 906868 ACH906868 ACH 906868ACH 906868 ACH906868 ACH 906868ACH 479211 ACH479211 ACH 479211A
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Publication date
Application filed by Int Standard Electric CorpfiledCriticalInt Standard Electric Corp
Publication of CH479211ApublicationCriticalpatent/CH479211A/en