Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American ZincfiledCriticalAmerican Zinc
Priority to BE582022ApriorityCriticalpatent/BE582022A/en
Publication of BE582022ApublicationCriticalpatent/BE582022A/en