CH414755A - Elektrische Signalisierungsanlage, insbesondere in Telephon- oder Telegraphenanlagen
- Google Patents
Elektrische Signalisierungsanlage, insbesondere in Telephon- oder Telegraphenanlagen
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Publication number
CH414755A
CH414755ACH908063ACH908063ACH414755ACH 414755 ACH414755 ACH 414755ACH 908063 ACH908063 ACH 908063ACH 908063 ACH908063 ACH 908063ACH 414755 ACH414755 ACH 414755A
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Publication date
Application filed by Standard Telephon & Radio AgfiledCriticalStandard Telephon & Radio Ag
Publication of CH414755ApublicationCriticalpatent/CH414755A/de