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Individual
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Individual
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Priority to ES65927ApriorityCriticalpatent/ES65927A1/es
Publication of ES65927A1publicationCriticalpatent/ES65927A1/es
ES65927A1917-12-051917-12-05Un procedimiento para la obtención de carbón compuesto o artificial, para usos domésticos e industriales.
ExpiredES65927A1
(es)