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
AU6957/55A
Inventor
Armstrong William
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.)
Armstrong Patents Co Ltd
Original Assignee
Armstrong Patents Co Ltd
Filing date
Publication of AU206216B2publicationCriticalpatent/AU206216B2/en
Application filed by Armstrong Patents Co LtdfiledCriticalArmstrong Patents Co Ltd