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.)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norton CofiledCriticalNorton Co
Priority to CA295,143ApriorityCriticalpatent/CA1092169A/fr
Application grantedgrantedCritical
Publication of CA1092169ApublicationCriticalpatent/CA1092169A/fr