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
CA899349A
Inventor
Burton K. Wasson
Original Assignee
Charles E Frosst and Co
Publication date
Application grantedgrantedCritical
Publication of CA899349ApublicationCriticalpatent/CA899349A/en