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
AU3647/40A
Inventor
Becker Joseph
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.)
Beazer East Inc
Original Assignee
Koppers Co Inc
Filing date
Publication of AU113718B2publicationCriticalpatent/AU113718B2/en
Application filed by Koppers Co IncfiledCriticalKoppers Co Inc