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
CA656139A
Inventor
A. Vos Herman
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.)
INTERWAY UNION DES CEMENTS ET DES PLATRES
Original Assignee
INTERWAY UNION DES CEMENTS ET DES PLATRES
Publication date
Application grantedgrantedCritical
Publication of CA656139ApublicationCriticalpatent/CA656139A/en