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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International Lead Zinc Research Organization Inc
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International Lead Zinc Research Organization Inc
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Priority claimed from GB1249274Aexternal-prioritypatent/GB1458284A/en
Application filed by International Lead Zinc Research Organization IncfiledCriticalInternational Lead Zinc Research Organization Inc
Application grantedgrantedCritical
Publication of AU491503B2publicationCriticalpatent/AU491503B2/en
Publication of AU7896675ApublicationCriticalpatent/AU7896675A/en