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.)
Expired - Lifetime
Application number
AU931/61A
Inventor
Douglas Hawes. LAPSED DEFORE ACCEPTANCE Frank
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.)
David Roberts & Co Engineers) Ltd
Original Assignee
David Roberts & Co Engineers) Ltd
Filing date
Publication of AU253604B2publicationCriticalpatent/AU253604B2/en
Application filed by David Roberts & Co Engineers) LtdfiledCriticalDavid Roberts & Co Engineers) Ltd