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.)
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 IndividualfiledCriticalIndividual
Priority to ES0036150UpriorityCriticalpatent/ES36150U/en
Publication of ES36150UpublicationCriticalpatent/ES36150U/en
Improved electric warning device, characterized in that it is composed of a body or box of any suitable material, and conveniently, preferably of circular section, one of whose bases is open on all its surface, and bordered by a projection or wing, in the which perforations have been made for fitting and coupling a piece that closes the assembly, this second piece having openings to let out the sound produced by the vibration of a diaphragm or membrane coupled between both pieces, bringing the closing one a cap spherical adjusted in its center, which acts as a sound diffuser. (Machine-translation by Google Translate, not legally binding)
ES0036150U1953-05-081953-05-08Improved electrical warning (Machine-translation by Google Translate, not legally binding)
PendingES36150U
(en)
Improvements introduced in the manufacture of appliances electroacºsticos de aspiraciºn. (Machine-translation by Google Translate, not legally binding)
Apparatus for the fonation without vocal strings, especially suitable for laringectomatized (Machine-translation by Google Translate, not legally binding)