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- Google Patents
AU253973B2 - Improved drainage sumps
- Google Patents
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
AU3800/61A
Inventor
David Davis Noel
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.)
Everhard Concrete Products Pty Ltd
Original Assignee
Everhard Concrete Products Pty Ltd
Filing date
Publication of AU253973B2publicationCriticalpatent/AU253973B2/en