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Priority to ES75565ApriorityCriticalpatent/ES75565A1/en
Publication of ES75565A1publicationCriticalpatent/ES75565A1/en
ES75565A1920-09-141920-09-14
Procedure for the direct obtaining of paraffin from lignite distillation tar, crude tar and other distillation products.
ExpiredES75565A1
(en)