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.)
William Malcolm Ferris
Original Assignee
William Malcolm Ferris
Filing date
Publication date
Application filed by William Malcolm FerrisfiledCriticalWilliam Malcolm Ferris
Application grantedgrantedCritical
Publication of AU148573B2publicationCriticalpatent/AU148573B2/en
Publication of AU73451ApublicationCriticalpatent/AU73451A/en