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ES176818A1 - IMPROVEMENTS IN TELEPHONE AND SIMILAR PLANT SYSTEMS - Google Patents

IMPROVEMENTS IN TELEPHONE AND SIMILAR PLANT SYSTEMS

Info

Publication number
ES176818A1
ES176818A1 ES176818A ES176818A ES176818A1 ES 176818 A1 ES176818 A1 ES 176818A1 ES 176818 A ES176818 A ES 176818A ES 176818 A ES176818 A ES 176818A ES 176818 A1 ES176818 A1 ES 176818A1
Authority
ES
Spain
Prior art keywords
telephone
plant systems
similar plant
similar
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
ES176818A
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
Priority claimed from US628614A external-priority patent/US2520132A/en
Application filed by Alcatel Espana SA, Standard Electrica SA filed Critical Alcatel Espana SA
Publication of ES176818A1 publication Critical patent/ES176818A1/en
Expired legal-status Critical Current

Links

ES176818A 1945-11-14 1947-02-15 IMPROVEMENTS IN TELEPHONE AND SIMILAR PLANT SYSTEMS Expired ES176818A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US628614A US2520132A (en) 1945-11-14 1945-11-14 Electronic line finder system

Publications (1)

Publication Number Publication Date
ES176818A1 true ES176818A1 (en) 1947-03-16

Family

ID=65622192

Family Applications (1)

Application Number Title Priority Date Filing Date
ES176818A Expired ES176818A1 (en) 1945-11-14 1947-02-15 IMPROVEMENTS IN TELEPHONE AND SIMILAR PLANT SYSTEMS

Country Status (1)

Country Link
ES (1) ES176818A1 (en)

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