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.)
American Smelting and Refining Co
Original Assignee
American Smelting and Refining Co
Filing date
Publication date
Application filed by American Smelting and Refining CofiledCriticalAmerican Smelting and Refining Co
Application grantedgrantedCritical
Publication of AU257117B2publicationCriticalpatent/AU257117B2/en
Publication of AU493161ApublicationCriticalpatent/AU493161A/en