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ES148401A1 - Mejoras en sistemas telefónicos - Google Patents

Mejoras en sistemas telefónicos

Info

Publication number
ES148401A1
ES148401A1 ES148401A ES148401A ES148401A1 ES 148401 A1 ES148401 A1 ES 148401A1 ES 148401 A ES148401 A ES 148401A ES 148401 A ES148401 A ES 148401A ES 148401 A1 ES148401 A1 ES 148401A1
Authority
ES
Spain
Prior art keywords
telephone systems
telephone
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
ES148401A
Other languages
English (en)
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to ES148401A priority Critical patent/ES148401A1/es
Publication of ES148401A1 publication Critical patent/ES148401A1/es
Expired legal-status Critical Current

Links

ES148401A 1940-04-18 1940-04-18 Mejoras en sistemas telefónicos Expired ES148401A1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES148401A ES148401A1 (es) 1940-04-18 1940-04-18 Mejoras en sistemas telefónicos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES148401A ES148401A1 (es) 1940-04-18 1940-04-18 Mejoras en sistemas telefónicos

Publications (1)

Publication Number Publication Date
ES148401A1 true ES148401A1 (es) 1942-05-01

Family

ID=65597412

Family Applications (1)

Application Number Title Priority Date Filing Date
ES148401A Expired ES148401A1 (es) 1940-04-18 1940-04-18 Mejoras en sistemas telefónicos

Country Status (1)

Country Link
ES (1) ES148401A1 (es)

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