ES177004A1 - Mejoras en o relativas a dispositivos electroacústicos - Google Patents

Mejoras en o relativas a dispositivos electroacústicos

Info

Publication number
ES177004A1
ES177004A1 ES177004A ES177004A ES177004A1 ES 177004 A1 ES177004 A1 ES 177004A1 ES 177004 A ES177004 A ES 177004A ES 177004 A ES177004 A ES 177004A ES 177004 A1 ES177004 A1 ES 177004A1
Authority
ES
Spain
Prior art keywords
electroacustic
relating
devices
electroacustic devices
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
ES177004A
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Standard Electrica 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
Priority claimed from GB15574/44A external-priority patent/GB594082A/en
Priority claimed from GB21942/45A external-priority patent/GB616158A/en
Priority claimed from GB2131/47A external-priority patent/GB631970A/en
Application filed by Alcatel Espana SA, Standard Electrica SA filed Critical Alcatel Espana SA
Publication of ES177004A1 publication Critical patent/ES177004A1/es
Expired legal-status Critical Current

Links

ES177004A 1944-08-15 1947-02-28 Mejoras en o relativas a dispositivos electroacústicos Expired ES177004A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB15574/44A GB594082A (en) 1945-08-27 1944-08-15 Improvements in or relating to microphones
GB21942/45A GB616158A (en) 1944-08-15 1945-08-27 Improvements in or relating to electro-acoustic devices
GB2131/47A GB631970A (en) 1944-08-15 1947-01-23 Improvements in or relating to acoustic diaphragms

Publications (1)

Publication Number Publication Date
ES177004A1 true ES177004A1 (es) 1947-04-16

Family

ID=67644853

Family Applications (1)

Application Number Title Priority Date Filing Date
ES177004A Expired ES177004A1 (es) 1944-08-15 1947-02-28 Mejoras en o relativas a dispositivos electroacústicos

Country Status (1)

Country Link
ES (1) ES177004A1 (es)

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