Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Ecrofnier & Partners Ltd
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Ecrofnier & Partners Ltd
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Publication date
Application filed by Ecrofnier & Partners LtdfiledCriticalEcrofnier & Partners Ltd
Publication of ES212321A1publicationCriticalpatent/ES212321A1/en
Manufacturing Of Tubular Articles Or Embedded Moulded Articles
(AREA)
Abstract
Improvements introduced in the collapsible molding cores for use in the molding of construction members and hollow concrete beams, comprising two lateral members and upper and lower members, mutually cooperating to form the core, together with a bar extending to through the center of the core and moving axially with respect thereto, the lateral and upper and lower members being joined with said bar in such a way that when the bar moves axially they move outwards to form the erected male or they are squashed to allow remove the male. (Machine-translation by Google Translate, not legally binding)
ES0212321A1952-11-261953-11-23Improved improvements in plastic males and concrete beams (Machine-translation by Google Translate, not legally binding)
ExpiredES212321A1
(en)