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
CA648132A
Inventor
Gandon Louis
G. L. Marcheguet Henri
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.)
Nobel Bozel SA
Original Assignee
Nobel Bozel SA
Publication date
Application grantedgrantedCritical
Publication of CA648132ApublicationCriticalpatent/CA648132A/en