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Individual
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Individual
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Priority to ES109250UpriorityCriticalpatent/ES109250Y/en
Publication of ES109250UpublicationCriticalpatent/ES109250U/en
Application grantedgrantedCritical
Publication of ES109250YpublicationCriticalpatent/ES109250Y/en
Indicator whistle characterized by being constituted by a piece of aluminum plate in the form of a bell or spherical cap with two diametrically opposed holes and an aluminum sheet equipped with two short diametrically opposed notches that coincide with the holes in the cap that subdivides the interior of this in two parts and gives the steam escaping from the container the convenient direction to produce a sharp whistle. (Machine-translation by Google Translate, not legally binding)
ES109250U1964-10-301964-10-30
A PRESSURE INDICATOR WHISTLE.
ExpiredES109250Y
(en)