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ES170424A1 - IMPROVEMENTS IN AUTOMATIC AND SEMIAUTOMATIC TELEPHONE SYSTEMS - Google Patents

IMPROVEMENTS IN AUTOMATIC AND SEMIAUTOMATIC TELEPHONE SYSTEMS

Info

Publication number
ES170424A1
ES170424A1 ES170424A ES170424A ES170424A1 ES 170424 A1 ES170424 A1 ES 170424A1 ES 170424 A ES170424 A ES 170424A ES 170424 A ES170424 A ES 170424A ES 170424 A1 ES170424 A1 ES 170424A1
Authority
ES
Spain
Prior art keywords
automatic
telephone systems
semiautomatic telephone
semiautomatic
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES170424A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Standard Electrica SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Espana SA, Standard Electrica SA filed Critical Alcatel Espana SA
Priority to ES170424A priority Critical patent/ES170424A1/en
Publication of ES170424A1 publication Critical patent/ES170424A1/en
Expired legal-status Critical Current

Links

ES170424A 1945-07-10 1945-07-10 IMPROVEMENTS IN AUTOMATIC AND SEMIAUTOMATIC TELEPHONE SYSTEMS Expired ES170424A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES170424A ES170424A1 (en) 1945-07-10 1945-07-10 IMPROVEMENTS IN AUTOMATIC AND SEMIAUTOMATIC TELEPHONE SYSTEMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES170424A ES170424A1 (en) 1945-07-10 1945-07-10 IMPROVEMENTS IN AUTOMATIC AND SEMIAUTOMATIC TELEPHONE SYSTEMS

Publications (1)

Publication Number Publication Date
ES170424A1 true ES170424A1 (en) 1945-08-16

Family

ID=65766101

Family Applications (1)

Application Number Title Priority Date Filing Date
ES170424A Expired ES170424A1 (en) 1945-07-10 1945-07-10 IMPROVEMENTS IN AUTOMATIC AND SEMIAUTOMATIC TELEPHONE SYSTEMS

Country Status (1)

Country Link
ES (1) ES170424A1 (en)

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