CH477078A - Wähltastatur für Codewahl in Fernmelde-, insbesondere Fernsprechanlagen
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Wähltastatur für Codewahl in Fernmelde-, insbesondere Fernsprechanlagen
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Publication number
CH477078A
CH477078ACH551568ACH551568ACH477078ACH 477078 ACH477078 ACH 477078ACH 551568 ACH551568 ACH 551568ACH 551568 ACH551568 ACH 551568ACH 477078 ACH477078 ACH 477078A
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Application filed by Siemens AgfiledCriticalSiemens Ag
Publication of CH477078ApublicationCriticalpatent/CH477078A/de