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Individual
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Individual
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Priority to ES64147ApriorityCriticalpatent/ES64147A1/en
Publication of ES64147A1publicationCriticalpatent/ES64147A1/en
ES64147A1917-03-221917-03-22
A new industrial product consisting of artificial coal that advantageously replaces all known natural coals.
ExpiredES64147A1
(en)