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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to ES27459ApriorityCriticalpatent/ES27459A1/es
Publication of ES27459A1publicationCriticalpatent/ES27459A1/es
Un procedimiento para fabricar con la hulla o el lignito una materia colorante negra, una materia curtiente o segunda materia colorante negra y otros sub-productos utilizables.