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
CA721989A
Inventor
E. Thompson Donald
A. Goddard Hubert
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.)
SWISSEDENT INTERNATIONAL
Original Assignee
SWISSEDENT INTERNATIONAL
Publication date
Application grantedgrantedCritical
Publication of CA721989ApublicationCriticalpatent/CA721989A/en