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
AU28768/71A
Inventor
LLEWELLYN E. COPELAND and GEORGE J. VERBECK NATHAN R. GREENING
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.)
Portland Cement Association
Original Assignee
Portland Cement Association
Priority date (The priority date 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 date listed.)
Filing date
Publication of AU426069B2publicationCriticalpatent/AU426069B2/en
Application filed by Portland Cement AssociationfiledCriticalPortland Cement Association