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
Application number
CA870047A
Inventor
Ostberg Werner
Patzias Terry
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.)
Dundee Cement Co
Original Assignee
Dundee Cement Co
Publication date
Application grantedgrantedCritical
Publication of CA870047ApublicationCriticalpatent/CA870047A/en