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Priority to ES0219197ApriorityCriticalpatent/ES219197A1/en
Publication of ES219197A1publicationCriticalpatent/ES219197A1/en
Improvements in the construction of metallic lifeboats characterized in that the shape is symmetrical with respect to the planes of surgery and the master frame and are constituted in its central part by two planes that are cut in the bilge and in both ends by a conical surface and another helical variable pitch that limits the sides and bottom of the boat. (Machine-translation by Google Translate, not legally binding)
ES0219197A1954-12-241954-12-24Improvements in the construction of metallic lifeboats (Machine-translation by Google Translate, not legally binding)
ExpiredES219197A1
(en)