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
CA782398A
Inventor
C. Berger George
Original Assignee
C. Berger George
Publication date
Priority to CA782398TpriorityCritical
Application grantedgrantedCritical
Publication of CA782398ApublicationCriticalpatent/CA782398A/en