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
CA722879A
Inventor
Sebardt Wilhelm
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.)
Ytong International AB
Original Assignee
Ytong International AB
Publication date
Application grantedgrantedCritical
Publication of CA722879ApublicationCriticalpatent/CA722879A/en