AT250452B -
Circuit arrangement for a telephone, in particular telephone branch exchange, with code dialing and pulse dialing of the microphone units
- Google Patents
Circuit arrangement for a telephone, in particular telephone branch exchange, with code dialing and pulse dialing of the microphone units
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Publication number
AT250452B
AT250452BAT355264AAT355264AAT250452BAT 250452 BAT250452 BAT 250452BAT 355264 AAT355264 AAT 355264AAT 355264 AAT355264 AAT 355264AAT 250452 BAT250452 BAT 250452B
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Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT250452BpublicationCriticalpatent/AT250452B/en
AT355264A1963-04-261964-04-22
Circuit arrangement for a telephone, in particular telephone branch exchange, with code dialing and pulse dialing of the microphone units
AT250452B
(en)