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.)
John William Porta
Original Assignee
John William Porta
Filing date
Publication date
Application filed by John William PortafiledCriticalJohn William Porta
Application grantedgrantedCritical
Publication of AU138920B2publicationCriticalpatent/AU138920B2/en
Publication of AU1598347ApublicationCriticalpatent/AU1598347A/en