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
CA876807A
Inventor
Bourgeois Jacques
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.)
Societe dExploitation Lesieur Cotelle et Foucher SA ELCO
Original Assignee
Societe dExploitation Lesieur Cotelle et Foucher SA ELCO
Publication date
Application grantedgrantedCritical
Publication of CA876807ApublicationCriticalpatent/CA876807A/en