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Individual
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Individual
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Priority to ES81620ApriorityCriticalpatent/ES81620A1/es
Publication of ES81620A1publicationCriticalpatent/ES81620A1/es
ES81620A1922-05-091922-05-09Perfeccionamientos en los calentadores empleados en las calderas de locomotoras y otras calderas ignitubulares.
ExpiredES81620A1
(es)