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
CA772415A
Inventor
Pachuta Martin
Original Assignee
Jervis B Webb Co
Publication date
Application grantedgrantedCritical
Publication of CA772415ApublicationCriticalpatent/CA772415A/en