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Individual
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Priority to ES0078918UpriorityCriticalpatent/ES78918Y/en
Publication of ES78918UpublicationCriticalpatent/ES78918U/en
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Publication of ES78918YpublicationCriticalpatent/ES78918Y/en
An apparatus for breathing under water, essentially characterized by the fact of being constituted by a lung box whose volume is variable at will by distance or angular approach to each other of two pieces that constitute the walls of the box itself. (Machine-translation by Google Translate, not legally binding)