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
CA703664A
Inventor
Walz Alfred
Fernholz Hans-Hermann
Mayer Manfred
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.)
Saint Gobain Isover G+H AG
Original Assignee
Gruenzweig und Hartmann AG
Publication date
Application grantedgrantedCritical
Publication of CA703664ApublicationCriticalpatent/CA703664A/en