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ES93021A1 - Improvements in automatic or semi-automatic telephone systems. - Google Patents

Improvements in automatic or semi-automatic telephone systems.

Info

Publication number
ES93021A1
ES93021A1 ES93021A ES93021A ES93021A1 ES 93021 A1 ES93021 A1 ES 93021A1 ES 93021 A ES93021 A ES 93021A ES 93021 A ES93021 A ES 93021A ES 93021 A1 ES93021 A1 ES 93021A1
Authority
ES
Spain
Prior art keywords
automatic
semi
telephone systems
automatic 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
ES93021A
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.)
Telefonos Bell SA
Original Assignee
Telefonos Bell 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 Telefonos Bell SA filed Critical Telefonos Bell SA
Priority to ES93021A priority Critical patent/ES93021A1/en
Publication of ES93021A1 publication Critical patent/ES93021A1/en
Expired legal-status Critical Current

Links

ES93021A 1925-03-18 1925-03-18 Improvements in automatic or semi-automatic telephone systems. Expired ES93021A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES93021A ES93021A1 (en) 1925-03-18 1925-03-18 Improvements in automatic or semi-automatic telephone systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES93021A ES93021A1 (en) 1925-03-18 1925-03-18 Improvements in automatic or semi-automatic telephone systems.

Publications (1)

Publication Number Publication Date
ES93021A1 true ES93021A1 (en) 1925-06-16

Family

ID=64264083

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93021A Expired ES93021A1 (en) 1925-03-18 1925-03-18 Improvements in automatic or semi-automatic telephone systems.

Country Status (1)

Country Link
ES (1) ES93021A1 (en)

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