[go: up one dir, main page]

ES91028A3 - Improvements in automatic call devices or telephone exchanges. - Google Patents

Improvements in automatic call devices or telephone exchanges.

Info

Publication number
ES91028A3
ES91028A3 ES91028A ES91028A ES91028A3 ES 91028 A3 ES91028 A3 ES 91028A3 ES 91028 A ES91028 A ES 91028A ES 91028 A ES91028 A ES 91028A ES 91028 A3 ES91028 A3 ES 91028A3
Authority
ES
Spain
Prior art keywords
automatic call
telephone exchanges
call devices
devices
exchanges
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
ES91028A
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 ES91028A priority Critical patent/ES91028A3/en
Publication of ES91028A3 publication Critical patent/ES91028A3/en
Expired legal-status Critical Current

Links

ES91028A 1924-10-04 1924-10-04 Improvements in automatic call devices or telephone exchanges. Expired ES91028A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES91028A ES91028A3 (en) 1924-10-04 1924-10-04 Improvements in automatic call devices or telephone exchanges.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES91028A ES91028A3 (en) 1924-10-04 1924-10-04 Improvements in automatic call devices or telephone exchanges.

Publications (1)

Publication Number Publication Date
ES91028A3 true ES91028A3 (en) 1924-11-16

Family

ID=69499800

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91028A Expired ES91028A3 (en) 1924-10-04 1924-10-04 Improvements in automatic call devices or telephone exchanges.

Country Status (1)

Country Link
ES (1) ES91028A3 (en)

Similar Documents

Publication Publication Date Title
ES91028A3 (en) Improvements in automatic call devices or telephone exchanges.
ES88012A1 (en) Improvements in switches for telephone exchanges.
ES96050A1 (en) Improvement in telephone automatic switches.
ES95097A1 (en) Improvements in the mechanisms of automatic telephone exchanges.
ES89606A1 (en) Improvements in telephone systems.
ES91218A3 (en) Improvements in telephone systems.
ES96006A1 (en) Improvements in automatic telephone switches.
ES96019A1 (en) Improvements in automatic telephone switches.
ES88207A1 (en) Improvements in telephone sets.
AT113265B (en) Circuit arrangement for fully automatic telephone exchanges.
ES90841A1 (en) Improvements in telephone exchange systems.
ES88677A3 (en) Improvements in telephone exchange systems.
ES90994A1 (en) Improvements in telephone exchange systems.
ES91523A1 (en) Improvements in telephone exchange systems.
ES90588A1 (en) Improvements in telephone exchange systems.
ES92192A1 (en) Improvements in automatic or semi-automatic telephone systems.
ES93021A1 (en) Improvements in automatic or semi-automatic telephone systems.
DK45254C (en) Coupling device for automatic telephone exchanges.
ES88873A1 (en) Improvements in telephone receiving devices.
AT112310B (en) Circuit arrangement for call seekers in automatic telephone exchanges.
ES99048A1 (en) Improvements in automatic telephone systems.
ES87916A2 (en) Improvements in telephone link systems.
ES99395A1 (en) Improvements in automatic or semi-automatic telephone systems.
ES94764A3 (en) Improvements in automated telephone systems.
AT104322B (en) Telephone.