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
CA771989A
Inventor
A. G. Roujob Leopold
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.)
Belge Prat-Daniel SA Ste
Original Assignee
Belge Prat-Daniel SA Ste
Publication date
Application grantedgrantedCritical
Publication of CA771989ApublicationCriticalpatent/CA771989A/en