ES159367A1 - Sistema de telefonía en altavoz, sin comunicación manual - Google Patents

Sistema de telefonía en altavoz, sin comunicación manual

Info

Publication number
ES159367A1
ES159367A1 ES159367A ES159367A ES159367A1 ES 159367 A1 ES159367 A1 ES 159367A1 ES 159367 A ES159367 A ES 159367A ES 159367 A ES159367 A ES 159367A ES 159367 A1 ES159367 A1 ES 159367A1
Authority
ES
Spain
Prior art keywords
speaker
telephone system
manual communication
manual
communication
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
ES159367A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to ES159367A priority Critical patent/ES159367A1/es
Publication of ES159367A1 publication Critical patent/ES159367A1/es
Expired legal-status Critical Current

Links

ES159367A 1942-11-21 1942-11-21 Sistema de telefonía en altavoz, sin comunicación manual Expired ES159367A1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES159367A ES159367A1 (es) 1942-11-21 1942-11-21 Sistema de telefonía en altavoz, sin comunicación manual

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES159367A ES159367A1 (es) 1942-11-21 1942-11-21 Sistema de telefonía en altavoz, sin comunicación manual

Publications (1)

Publication Number Publication Date
ES159367A1 true ES159367A1 (es) 1943-06-01

Family

ID=65647298

Family Applications (1)

Application Number Title Priority Date Filing Date
ES159367A Expired ES159367A1 (es) 1942-11-21 1942-11-21 Sistema de telefonía en altavoz, sin comunicación manual

Country Status (1)

Country Link
ES (1) ES159367A1 (es)

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