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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Individual
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Individual
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Priority to ES139506ApriorityCriticalpatent/ES139506A3/es
Publication of ES139506A3publicationCriticalpatent/ES139506A3/es
ES139506A1935-09-141935-09-14Procedimiento para la fabricación de ladrillos porosos aislantes y ladrillos refractarios porosos aislantes.
ExpiredES139506A3
(es)