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Individual
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Individual
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Priority to ES466287ApriorityCriticalpatent/ES466287A1/es
Publication of ES466287A1publicationCriticalpatent/ES466287A1/es
ES466287A1978-01-241978-01-24Sistema para obtener acero por aluminotermia aplicable a la soldadura de perfiles de hierro o acero.
ExpiredES466287A1
(es)