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.)
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Sidevan SA
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Sidevan SA
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Application filed by Sidevan SAfiledCriticalSidevan SA
Priority to ES478029ApriorityCriticalpatent/ES478029A3/en
Publication of ES478029A3publicationCriticalpatent/ES478029A3/en
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
Improvements in the manufacture of dynamic transducers, essentially characterized by the fact of constituting them based on a bowl inside which the magnet is disposed, around which is placed an insert ring that fits inside the bowl and is provided with holes for passage of sound and compensation. (Machine-translation by Google Translate, not legally binding)
ES478029A1979-02-231979-02-23Improvements in the manufacture of dynamic transducers. (Machine-translation by Google Translate, not legally binding)
ExpiredES478029A3
(en)
Horn for pneumatic acoustic warnator with trumpet fixed to the box through a cap of plastic or similar material (Machine-translation by Google Translate, not legally binding)
Procedure and apparatus for the auditory treatment of disorders related to internal phonatory sensitivities. (Machine-translation by Google Translate, not legally binding)