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
CA729853A
Inventor
Careje Michel
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.)
DEREFA POUR LE DEVELOPPEMENT RECHERCHES ET FABRICATIONS I NDUSTRIELLES Ets
Original Assignee
DEREFA POUR LE DEVELOPPEMENT RECHERCHES ET FABRICATIONS I NDUSTRIELLES Ets
Publication date
Application grantedgrantedCritical
Publication of CA729853ApublicationCriticalpatent/CA729853A/en