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
CA743867A
Inventor
Wirsching Franz
Wandser Bruno
Knauf Karl
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.)
Knauf Gips KG
Original Assignee
Gebr Knauf Westdeutsche Gipswerke
Publication date
Application grantedgrantedCritical
Publication of CA743867ApublicationCriticalpatent/CA743867A/en