ES72975A1 - Improvements in networks or automatic telephone lines. - Google Patents

Improvements in networks or automatic telephone lines.

Info

Publication number
ES72975A1
ES72975A1 ES72975A ES72975A ES72975A1 ES 72975 A1 ES72975 A1 ES 72975A1 ES 72975 A ES72975 A ES 72975A ES 72975 A ES72975 A ES 72975A ES 72975 A1 ES72975 A1 ES 72975A1
Authority
ES
Spain
Prior art keywords
networks
telephone lines
automatic telephone
automatic
lines
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
ES72975A
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.)
Automatic Electric Co
Original Assignee
Automatic Electric Co
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 Electric Co filed Critical Automatic Electric Co
Priority to ES72975A priority Critical patent/ES72975A1/en
Publication of ES72975A1 publication Critical patent/ES72975A1/en
Expired legal-status Critical Current

Links

ES72975A 1920-03-15 1920-03-15 Improvements in networks or automatic telephone lines. Expired ES72975A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES72975A ES72975A1 (en) 1920-03-15 1920-03-15 Improvements in networks or automatic telephone lines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES72975A ES72975A1 (en) 1920-03-15 1920-03-15 Improvements in networks or automatic telephone lines.

Publications (1)

Publication Number Publication Date
ES72975A1 true ES72975A1 (en) 1920-05-25

Family

ID=64242461

Family Applications (1)

Application Number Title Priority Date Filing Date
ES72975A Expired ES72975A1 (en) 1920-03-15 1920-03-15 Improvements in networks or automatic telephone lines.

Country Status (1)

Country Link
ES (1) ES72975A1 (en)

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