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
CA799224A
Inventor
Ritchie David
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.)
BEATRICE R WESTLEY
Original Assignee
BEATRICE R WESTLEY
Publication date
Application grantedgrantedCritical
Publication of CA799224ApublicationCriticalpatent/CA799224A/en