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Priority to ES0237693ApriorityCriticalpatent/ES237693A1/en
Publication of ES237693A1publicationCriticalpatent/ES237693A1/en
Hydraulic lifting device by pressure, characterized by being constituted by a cylindrical body equipped with three or more supports in its lower base, for its support at the bottom of a well or a large water tank; having said cylindrical body, inside it, a chamber or reservoir that, when submerged in the well, is filled with water thanks to a valvular entrance mechanism provided in the lower base of said cylindrical body. (Machine-translation by Google Translate, not legally binding)
ES0237693A1957-09-201957-09-20Pressure hydraulic elevator apparatus (Machine-translation by Google Translate, not legally binding)
ExpiredES237693A1
(en)