ES223560A3 - Some improvements introduced in the sound advertising devices (Machine-translation by Google Translate, not legally binding)
- Google Patents
Some improvements introduced in the sound advertising devices (Machine-translation by Google Translate, not legally binding)
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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Soc Dappareils Nouveaux Et Doutillages Rationnels
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Soc Dappareils Nouveaux Et Doutillages Rationnels
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Priority to ES223560ApriorityCriticalpatent/ES223560A3/en
Publication of ES223560A3publicationCriticalpatent/ES223560A3/en
Improvements introduced in sound warning devices, characterized by providing the warning device with a resonance disk whose vibration frequency is substantially equal to a multiple of the frequency of vibration of the set of vibrating parts of the device, a set called mobile equipment and which it includes the resonance disc itself. (Machine-translation by Google Translate, not legally binding)
ES223560A1955-09-181955-09-18Some improvements introduced in the sound advertising devices (Machine-translation by Google Translate, not legally binding)
ExpiredES223560A3
(en)
Some improvements introduced in the sound warning devices, particularly in which apply to vehicles (Machine-translation by Google Translate, not legally binding)
Removable furniture designed to facilitate a pseudo-stereophonic sound through sound devices installed inside (Machine-translation by Google Translate, not legally binding)