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.)
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.)
Robert Bosch SA
Original Assignee
Fabrica Espanola de Magnetos SA FEMSA
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Filing date
Publication date
Application filed by Fabrica Espanola de Magnetos SA FEMSAfiledCriticalFabrica Espanola de Magnetos SA FEMSA
Publication of ES208594A1publicationCriticalpatent/ES208594A1/en
Improvements in electro-acoustic horns, characterized by a breaker or switch comprising, in combination, at least two pairs of contacts coupled in series; means for simultaneous opening and closing of said pairs of contacts; at least one resistor in parallel with said contacts, and means for adjusting the position of the fixed contacts. (Machine-translation by Google Translate, not legally binding)
ES0208594A1952-06-091953-03-31Improvements in electroacotic speakers. (Machine-translation by Google Translate, not legally binding)
ExpiredES208594A1
(en)