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
CA845357A
Inventor
Schacht Eckhard
Muhlberg Heinz-Joachim
Brach Josef
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.)
Keramchemie GmbH
Original Assignee
Keramchemie GmbH
Publication date
Application grantedgrantedCritical
Publication of CA845357ApublicationCriticalpatent/CA845357A/en