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Individual
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Priority to ES72694ApriorityCriticalpatent/ES72694A2/en
Publication of ES72694A2publicationCriticalpatent/ES72694A2/en
ES72694A1920-02-201920-02-20
A pylon press for hollow profiled concrete blocks, also usable to press all other kinds of blocks of any other material.
ExpiredES72694A2
(en)
A process to give mortar, cement and concrete masses a complete waterproofing, a considerably increased bonding power and the property of an extraordinarily fast setting.