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.)
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Wests Gas Improvement Co Ltd
Original Assignee
Wests Gas Improvement Co Ltd
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Filing date
Publication date
Application filed by Wests Gas Improvement Co LtdfiledCriticalWests Gas Improvement Co Ltd
Priority to ES73904ApriorityCriticalpatent/ES73904A1/es
Publication of ES73904A1publicationCriticalpatent/ES73904A1/es
ES73904A1920-05-251920-05-25Perfeccionamientos relativos a la calefacción de las retortas verticales para la destilación de materias carbonosas.
ExpiredES73904A1
(es)