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.)
Harry Gilbert Willis
Original Assignee
Harry Gilbert Willis
Filing date
Publication date
Application filed by Harry Gilbert WillisfiledCriticalHarry Gilbert Willis
Application grantedgrantedCritical
Publication of AU165109B2publicationCriticalpatent/AU165109B2/en
Publication of AU2160153ApublicationCriticalpatent/AU2160153A/en