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
CA839816A
Inventor
A. Guenantin Jean
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.)
D'ETUDE ET DE RECHERCHE DES NOUVEAUX AGGLOMERANTS (SERNA) Ste
Original Assignee
D'ETUDE ET DE RECHERCHE DES NOUVEAUX AGGLOMERANTS (SERNA) Ste
Publication date
Application grantedgrantedCritical
Publication of CA839816ApublicationCriticalpatent/CA839816A/en