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
CA893120A
Inventor
W. Pfirrmann Rolf
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.)
Ed Geistlich Soehne AG fuer Chemische Industrie
Original Assignee
Ed Geistlich Soehne AG fuer Chemische Industrie
Publication date
Application grantedgrantedCritical
Publication of CA893120ApublicationCriticalpatent/CA893120A/en