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ES80907A3 - Improvements in automatic telephone exchange systems. - Google Patents

Improvements in automatic telephone exchange systems.

Info

Publication number
ES80907A3
ES80907A3 ES80907A ES80907A ES80907A3 ES 80907 A3 ES80907 A3 ES 80907A3 ES 80907 A ES80907 A ES 80907A ES 80907 A ES80907 A ES 80907A ES 80907 A3 ES80907 A3 ES 80907A3
Authority
ES
Spain
Prior art keywords
telephone exchange
automatic telephone
exchange systems
systems
automatic
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
ES80907A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to ES80907A priority Critical patent/ES80907A3/en
Publication of ES80907A3 publication Critical patent/ES80907A3/en
Expired legal-status Critical Current

Links

ES80907A 1922-02-25 1922-02-25 Improvements in automatic telephone exchange systems. Expired ES80907A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES80907A ES80907A3 (en) 1922-02-25 1922-02-25 Improvements in automatic telephone exchange systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES80907A ES80907A3 (en) 1922-02-25 1922-02-25 Improvements in automatic telephone exchange systems.

Publications (1)

Publication Number Publication Date
ES80907A3 true ES80907A3 (en) 1922-06-01

Family

ID=69408297

Family Applications (1)

Application Number Title Priority Date Filing Date
ES80907A Expired ES80907A3 (en) 1922-02-25 1922-02-25 Improvements in automatic telephone exchange systems.

Country Status (1)

Country Link
ES (1) ES80907A3 (en)

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