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Priority to ES1971171154UpriorityCriticalpatent/ES171154Y/en
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Publication of ES171154YpublicationCriticalpatent/ES171154Y/en
Flat key bulb, the type in which the top of each of the pistons of the mechanism associated with the bulb has the shape of a head of progressively decreasing section, characterized essentially by providing the housing of each head in a cavity of conjugate shape and size, practiced in each of the symmetrical faces of the operative member of the key, which is of rectangular and flattened configuration, receiving at its extreme edges, optionally, longitudinal notches determining the constitution of a family of keys, being differentiated these by the different position and depth of the circular recesses intended for the insertion of the heads of the corresponding pistons and for the different position of the end notches. (Machine-translation by Google Translate, not legally binding)