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Individual
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Individual
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Priority to ES77867ApriorityCriticalpatent/ES77867A1/es
Publication of ES77867A1publicationCriticalpatent/ES77867A1/es
ES77867A1921-03-311921-03-31Un procedimiento para la fabricación de piezas para la formación de techos o cubiertas y elementos de construcción.
ExpiredES77867A1
(es)